200529957 (1) 九、發明說明 【發明所屬之技術領域】 本發明，供加工例如往復動式內燃機關所使用的曲柄 軸用的曲柄銷銑床用刀具及安裝在其上的抛棄式刀片（以 下稱刀片），特別是有關，對於被安裝於加工機的轉接器 安裝曲柄銷銑床用刀具時的安裝機構。 【先前技術】 以往已知，例如專利文獻1的內裝型的曲柄銷銑床用 刀具。 此曲柄銷銑床用刀具，是在旋轉於線周圍的成爲略圓 環狀的刀具本體的內周面，形成複數第一刀片安裝座的同 時，在刀具本體的兩端面，形成複數第二刀片安裝座，對 於這些第一刀片安裝座及第二刀片安裝座，分別安裝同一 種類的刀片。 此刀片，是在成爲略平行四邊形平板狀的刀片本體的 相面對配置一對的側面及刀片本體的上下面的交叉稜線部 形成合計8個切刃，與上述一對的側面不同的他方的一對 的側面，是切落刀片本體的鈍角角落部側的領域使其角落 角變大，此他方的一對的側面是由2個壁面所構成並在刀 片本體的外方側形成山型狀凸出。進一步，刀片本體的上 下面的朝上述他方的一對的側面的連接部分，是各別被錐 面加工成凸曲面狀。 安裝於第一刀片安裝座的刀片，其形成於成爲略平行 200529957 (2) 四邊形平板狀的刀片本體的銳角角落部的一個切刃，是從 刀具本體的內周面突出，使軸#向前角（軸方向前角）：正， 徑向前角（徑方向前角）：負，成爲供加工曲柄軸的銷部 (軸部）的外周面的銷刃。 且，安裝於第二刀片安裝座的刀片，其形成於成爲略 平行四邊形平板狀的刀片本體的鈍角角落部的一個切刃， 是從刀具本體的端面突出，使軸向前角（軸方向前角）： 負，徑向前角（徑方向前角）：負，來加工曲柄軸的配重部 的側面用的波形刃。 在這種曲柄銷銑床用刀具中，藉由將同一種類的刀片 安裝於第一及第二刀片安裝座，以1個刀片讓形成合計8 處的切刃各別進行切削，就可以達成抑制工具費。而且， 藉由使用具備上述的他方的一對的側面的具有略平行四邊 形平板狀的刀片本體的刀片，就可對於安裝於第一刀片安 裝座的刀片，設定成給與作爲其銷刃的切刃的軸向前角爲 正，並謀求切削阻力的降低。 以往的曲柄銷銑床用刀具已知，具備：安裝於加工機 的略圓環狀的轉接器、及藉由安裝於此轉接器的內周部而 旋轉於線周圍略圓環狀的刀具本體，在刀具本體形成：從 外周面的全周朝徑方向外周側突出的略環狀的凸緣部，在 轉接器形成：從內周面的全周朝徑方向外周側凹陷的同時 承接上述凸緣部的略環狀的段差部。 在這種曲柄銷銑床用刀具，將刀具本體沿著軸線方向 ***轉接器的內周部的話，刀具本體的凸緣部及轉接器的 -8- 200529957 (3) 段差部是面接觸並於刀具本體的徑方向相互重疊，刀具本 體對於轉接器被定位在軸線方向。而且，對於從刀具本體 的外周面朝徑方向內周側凹陷形成的複數切口部嵌合複數 按鍵構件，藉由複數壓板按壓刀具本體的一方的端面，使 刀具本體對於轉接器被固定於周方向的同時，使刀具本體 的軸線與轉接器的軸線略一致，使刀具本體被安裝於轉接 器的內周部。 但是，在這種習知的曲柄銷銑床用刀具中，雖對於刀 具本體的凸緣部及轉接器的段差部可面接觸的略環狀的接 觸面，在其刀具本體的徑方向的長度是設定較長，藉由複 數壓板按壓刀具本體的一方的端面，但有在推力方向大的 負荷（在刀具本體的軸線方向的負荷）較弱的問題。即，刀 具本體被安裝於轉接器的狀態下，因具有在推力方向的負 荷，而使刀具本體的凸緣部或轉接器的段差部彎曲，因爲 隨此使刀具本體對於轉接器在推力方向（刀具本體的軸線 方向）產生偏離，所以設在此刀具本體的內周部的複數切 刃的擺動精度會悪化。 且，在專利文獻2中揭示，在刀具本體形成：從外周 面朝徑方向外周側突出的複數突起部，在轉接器形成：從 內周面朝徑方向外周側凹陷的同時嵌合上述的複數突起部 用的複數切口部，上述的複數突起部及複數切口部，是各 別使隨著朝向周方向的一對側面之間的距離朝向刀具*** 方向（將刀具本體***轉接器的內周部時的方向）的前方側 漸漸縮小的錐面狀的曲柄銷銑床用刀具。 -9- 200529957 (4) 這種曲柄銷銑床用刀具，當刀具本體沿著軸線方向插 入轉接器的內周部時，藉由使刀具本體的複數突起部各別 嵌合於轉接器的複數切口部，使刀具本體對於轉接器在其 軸線方向被定位的同時，使刀具本體對於轉接器在周方向 被固定，且，刀具本體的軸線是與轉接器的軸線略一致。 而且，藉由複數壓板按壓刀具本體的一方的端面，使刀具 本體被安裝於轉接器的內周部。 以往已知，具備、安裝於加工機的略圓環狀的轉接 器、及藉由安裝於此轉接器的內周部而旋轉於線周圍略圓 環狀的刀具本體曲柄銷銑床用刀具，在例如專利文獻2中 揭示，在刀具本體形成：從外周面朝徑方向外周側突出的 複數突起部，在轉接器形成：從內周面朝徑方向外周側凹 陷的同時嵌合上述的複數突起部的複數切口部，上述的複 數突起部及複數切口部，是各別使朝向周方向一對的側面 之間的距離隨著朝向刀具***方向（將刀具本體***轉接 器的內周部時的方向）的前方側縮小而形成錐面狀的曲柄 銷銑床用刀具。 這種曲柄銷銑床用刀具，當刀具本體沿著軸線方向插 入轉接器的內周部時，藉由使刀具本體的複數突起部各別 嵌合於轉接器的複數切口部，使刀具本體對於轉接器在軸 線方向被定位的同時，使刀具本體對於轉接器在周方向被 固定，且，刀具本體的軸線是與轉接器的軸線略一致。而 且，藉由複數壓板按壓刀具本體的一方的端面，就可使刀 具本體被安裝於轉接器的內周部。 -10- 200529957 (5) [專利文獻1]日本特開2002-46009號公報 [專利文獻2]日本特開平8-1 18125號公報 【發明內容】 (本發明所欲解決的課題） 但是，揭示於專利文獻1的曲柄銷銑床用刀具中，軸 向前角是設定成正的作爲銷刃的切刃，是形成成爲略平行 四邊形平板狀的刀片本體的銳角角落部的同時，此刀片本 體，因爲具備如上述的鈍角角落部側的領域被切落的他方 的一對的側面，所以形成於刀片本體的鈍角角落部的作爲 波形刃的切刃的徑向前角，會朝負角側變得很大。因此現 狀是，在此專利文獻1的曲柄銷銑床用刀具中，無法獲得 可達成切削阻力降低的有效的解決手段。 且，這種刀片的刀片本體，是藉由具備如上述的鈍角 角落部被切落的他方的一對的側面’刀片本體的長度只有 加長該切落部分，若不加長切刃長度就無法充分地確保， 就會使形成於刀具本體的刀片安裝座的占有空間變大，使 此刀具本體的強度降低。加上，因爲刀片本體的形狀複 雜，其製造困難，招來加工成本的增大。 本發明，是鑑於上述課題，第1目的是提供一種：效 果地降低切削阻力的同時，可以高度保持刀具本體的強 度，且，製造容易的曲柄銷銑床用刀具及安裝在其上的抛 棄式刀片。 但是，此專利文獻2的曲柄銷銑床用刀具中’對於在 -11 - 200529957 (6) 推力方向的負荷雖強力，但對於刀具本體的轉接器的在軸 線方向的定位’是因爲只藉由成爲錐面狀的突起部及成爲 錐面狀的切口部的嵌合’所以因加工時所產生的切削而使 熱轉接器熱膨脹時’若交換刀具本體的話’此刀具本體會 對於轉接器在軸線方向偏離。即’因轉接器熱膨脹’使形 成於此轉接器的複數切口部的寬擴大’對於這種寬擴大的 切口部嵌合常溫的刀具本體的突起部的話，刀具本體會插 入轉接器的內周部的太過深處，而使被設置於刀具本體的 內周部的複數切刃的擺動精度悪化。 本發明，是鑑於上述課題，第2目的是提供一種：即 使對於在推力方向的負荷或切削熱，也不會使刀具本體對 於轉接器在軸線方向偏離，可以高度保持切刃的擺動精度 的事的曲柄銷銑床用刀具。 但是，此專利文獻2的曲柄銷銑床用刀具中，形成於 刀具本體的位置於的複數突起部彼此之間的間隙，是朝刀 具本體的兩端面側開放，且，形成於轉接器的複數切口 部，是朝轉接器的兩端面側開放。 因此，無法各別高度保持刀具本體及轉接器的剛性， 隨此，將刀具本體安裝於轉接器時的安裝剛性也無法高度 保持，就會產生對於轉接器的刀具本體的偏離，而使設在 此刀具本體的內周部的複數切刃的擺動精度悪化。 本發明，是鑑於上述課題，第3目的是提供一種：高 度保持將刀具本體安裝於轉接器時的安裝剛性，不會產生 對於轉接器在刀具本體的偏離，可以良好地持續維持切刃 -12- 200529957 (7) 的擺動精度的曲柄銷銑床用刀具。 (用以解決課題的手段） 爲了解決上述的課題，達成第1目的，本發明的曲 銷銑床用刀具，其特徵爲：在旋轉於軸緣周圍的成爲略 環狀的刀具本體的周面形成第一刀片安裝座，在前述刀 本體的端面形成第二刀片安裝座，在前述第一刀片安裝 中，在成爲略梯形平板狀的刀片本體的相面對配置一對 側面及前述刀片本體的上下面的交叉棱線部形成切刃的 棄式刀片，是被安裝成使前述刀片本體的厚度方向與前 刀具本體的徑方向略一致，使形成於前述刀片本體的銳 角落部的切刃可進行切削，在前述第二刀片安裝座中， 述抛棄式刀片，是安裝成使前述刀片本體的厚度方向與 述刀具本體的軸線方向略一致，使形成於前述刀片本體 鈍角角落部的切刃可進行切削。 且，本發明的刀片，是安裝在本發明的曲柄銷銑床 刀具上的刀片，其特徵爲：在成爲略梯形平板狀的刀片 體的相面對配置一對的側面及前述刀片本體的上下面的 叉稜線部形成切刃。 爲了解決上述的課題，達成第2目的，本發明的曲 銷銑床用刀具，是具備：安裝於加工機的轉接器、及藉 安裝於此轉接器而可旋轉於軸線周圍的略圓環狀的刀具 體，其特徵爲：在前述刀具本體形成：從其周面的全周 前述刀具本體的徑方向突出的略環狀的凸緣部，在前述 柄 圓 具 座 的 抛 述 角 、二 刖 前 的 用 本 交 柄 由 本 朝 轉 •13- 200529957 (8) 接器形成：從其周面的全周朝前述刀具本體的徑方向凹陷 的同時承接前述凸緣部的略環狀的段差部，在前述刀具本 體被安裝於前述轉接器的狀態下，使前述凸緣部及前述段 差部面接觸並於前述刀具本體的徑方向相互重疊的同時， 在此接觸面的前述刀具本體的徑方向的長度是被設定在對 於前述刀具本體的厚度的D〇.1D〜1.0D的範圍內。 爲了解決上述的課題，達成第3目的，本發明的曲柄 銷銑床用刀具，是具備：安裝於加工機的轉接器、及藉由 安裝於此轉接器而可旋轉於軸線周圍的略圓環狀的刀具本 體，其特徵爲：在前述刀具本體形成：從其周面的全周朝 前述刀具本體的徑方向突出的略環狀的凸緣部，在前述轉 接器形成：從其周面的全周朝前述刀具本體的徑方向凹陷 的同時承接前述凸緣部的略環狀的段差部，在前述凸緣部 的前述段差部相面對的壁面及前述段差部的前述凸緣部的 相面對壁面之中的一方，形成朝前述刀具本體的軸線方向 突出的凸部，在他方，形成朝前述刀具本體的軸線方向凹 陷的同時嵌合前述凸部的凹部。 且，在本發明，前述凸部，是使朝向周方向的一對的 側面之間的距離朝向突出方向漸小，前述凹部，是使朝向 周方向的一對的側面之間的距離朝向凹陷方向漸小較佳。 (發明之效果） 依據本發明，因爲安裝於第一及第二刀片安裝座的同 一種類的刀片的刀片本體，是形成如上述的略梯形平板 -14- 200529957 (9) 狀，安裝於第一刀片安裝座的刀片，是將形成於刀片本體 的銳角角落部的切刃作爲銷刃進行切削，安裝於第二刀片 安裝座的刀片，是將形成於刀片本體的鈍角角落部的切刃 作爲波形刃進行切削，所以對於作爲被安裝於第一刀片安 裝座的刀片銷刃的切刃，設定軸向前角爲正。且，刀片本 體是形成略梯形平板狀，與上述一對的側面不同的他方的 側面是各別藉由1個壁面所構成，對於被安裝於第二刀片 安裝座的刀片的作爲波形刃的切刃，其徑向前角，不會朝 被設定成負的負角側明顯變大。因此，在本發明中，可效 果地降低切削阻力繼續高精度且穩定地進行曲柄軸的加 工。 且，刀片本體的他方的一對的側面是各別藉由1個壁 面構成，即使刀片本體的長度不長也可充分確保切刃長 度，縮小形成於刀具本體的刀片安裝座的占有空間，可以 高度保持此刀具本體的強度。 進一步，是刀片本體因爲形成簡略的形狀，所以其製 造容易，也可以達成加工成本的降低。 且，依據本發明，在刀具本體被安裝於轉接器的狀態 下’刀具本體的凸緣部及轉接器的段差部是面接觸並在刀 具本體的徑方向相互重疊，刀具本體因爲對於轉接器在軸 線方向被定位，所以因切削熱轉接器熱膨脹時即使交換刀 具本體，此交換的刀具本體也幾乎不會對於轉接器在軸線 方向產生偏離。 而且，對於刀具本體的凸緣部及轉接器的段差部可面 •15- 200529957 (10) 接蝕的略環狀的接觸面，因爲將在刀具本體的徑方向的 度設定成1 . 〇 D以下，所以即使在推力方向施加大的 荷，凸緣部或段差部也不易彎曲，不會因在推力方向的 荷使刀具本體對於轉接器在軸線方向偏離。且，對於上 略環狀的接觸面，因爲將刀具本體的徑方向由的長度設 成〇. 1 D以上，所以不會損害對於刀具本體的轉接器的 位功能。 因此，可高度保持持續設在刀具本體的內周部的複 切刃的擺動精度，進一步，可以提高曲柄軸的加工精度 且，在本發明，在前述刀具本體形成：從其周面朝 方向突出的複數突起部，在前述轉接器形成：從其周面 徑方向凹陷的複數切口部，在前述刀具本體被安裝於前 轉接器的狀態下，藉由將前述的複數突起部各別嵌合於 述的複數切口部，使前述刀具本體對於前述轉接器在周 向被固定的同時，使前述刀具本體的軸線與前述轉接器 軸線略一致較佳。 且，依據本發明，在刀具本體被安裝於轉接器的狀 下，上述凸部是嵌合於上述凹部，刀具本體是對於轉接 在軸線方向被定位’使刀具本體對於轉接器在其周方向 固定，且，使刀具本體的軸線與轉接器的軸線略一致。 而且，因爲上述凸部，是從上述略環狀的凸緣部或 差部的上述壁面朝刀具本體的軸線方向突出形成，上述 部，是從上述略環狀的段差部或凸緣部的上述壁面朝刀 本體的軸線方向凹陷形成，所以位置於凸部彼此之間的 長 負 負 述 定 定 數 〇 徑 朝 述 -W一 刖 方 的 態 器 被 段 凹 具 間 -16- 200529957 (11) 隙或凹部，就不會朝刀具本體的兩端面側或轉接器的兩端 面側開放，可以各别」胃® {呆ί寺力胃本1_ ί妾器％剛j彳生° 因此，因爲可以高度保持將刀具本體安裝於轉接器時 的安裝剛性，所以不會對於轉接器的刀具本體產生偏離’ 可良好地持續維持設在此刀具本體的複數切刃的擺動精 度，進一步，可以提高曲柄軸的加工精度。 【實施方式】 [實施例1] 以下，參照添付第1圖〜第3圖說明本發明的實施例 1的曲柄銷銑床用刀具。 本發明的實施例1的曲柄銷銑床用刀具的刀具本體 I 0 ’是如第1〜第2圖的要部擴大圖所示，成爲以旋轉於 軸線0周圍的軸線〇爲中心的略圓環狀。 &此刀具本體1 〇，在朝向徑方向內周側的內周面 II ’是複數第一刀片安裝座13·.·，是沿著刀具本體10的 IH @略等間隔形成，在朝向軸線〇方向外方側的兩端 ® 12A ' 12B的內周面1 1側，是各別使複數第二刀片安 ^ M 1 4…’沿著刀具本體1 0的周方向略等間隔形成。 形成於刀具本體1〇的內周面11的複數第一刀片安裝 m 13…’是在周方向，使配置於刀具本體10的兩端面 12A' 之中的一方的端面12A附近的、及配置於他方 12B附近的，在刀具本體10的周方向交互配列。 形成於刀具本體10的一方的端面12A的複數第二刀 -17- 200529957 (12) 片安裝座1 4…，是配列於周方向，且各別配置在形成於 他方的端面12B附近的內周面11的複數第一刀片安裝座 1 3…的刀具旋轉方向T的稍微後方側，形成於刀具本體 10的他方的端面12B的複數第二刀片安裝座14…也是配 列於周方向，且各別配置在形成於一方的端面1 2 A附近 的內周面11的複數第一刀片安裝座13…的刀具旋轉方向 T的稍微後方側。 而且，如上述安裝於第一刀片安裝座13…及第二刀 片安裝座14…的刀片的刀片本體20，是如第3圖所示， 成爲略梯形平板狀，具備：對於刀片本體20的厚度方向 的兩端相面對配置且相互平行的上下面21、21、及對於 刀片本體20的短手方向的兩端相面對配置的一對的長側 面2 2、2 2 (—方的一對的側面）、及對於刀片本體2 0的長 度方向的兩端相面對配置且相互平行的一對的短側面 23、23 (他方的一對的側面）。因此，刀片本體20，在其上 面視（沿著刀片本體20的厚度方向所見）如第3圖（a)，具 備：具有相互略同一的角落角的一對的銳角角落部24 A、 24 A、及相同地具有相互相同的角落角的一對的鈍角角落 部 24B 、 24B 。 在此，在刀片本體20的略中央部，供刀片被螺固時 所使用的夾具螺栓插通用的插通孔20A ’是貫通此刀片本 體20的厚度方向（與第3圖（b)的左右方向、上下面21略 相互垂直的方向）形成。 刀片本體20的一對的長側面22、22，是分別由對於 -18- 200529957 (13) 刀片本體20的厚度方向略平行的1個略平坦面所構成， 刀片本體2 0的一對的短側面2 3、2 3，也分別由對於刀片 本體20的厚度方向略平行的1個略平坦面所構成。 刀片本體20的上下面21、21，是分別在刀片本體20 的長度方向（第3圖（a)的左右方向）的兩端側部分，各別對 於刀片本體20的一對的短側面23、23交叉，但是如第 3(c)圖所示，上下面21、21的上述長度方向的兩端側部 分是各別被加工成凸曲面狀。 在上下面21，連繫一對的銳角角落部24A、24A彼此 的朝一方的短側面23的連接部分，是如第3圖（〇的左側 領域所示，成爲對於短側面 23平滑連接的曲面部分 21 A，連繫一對的鈍角角落部24B、24B彼此的朝他方的 短側面23的連接部分，是如第3(c)的右側領域圖所示， 成爲不對於短側面23平滑連接的曲面部分21 B。 而且，在刀片本體20中，在一對的長側面22、22及 上下面21、21的交叉稜線部形成切刃。 詳述的話，在上下面21、21的各曲面部分 21A、 21 A、21B、21B、及一對的長側面22、22的交叉稜線 部，形成成爲略凸曲線狀的曲線刃2 5 A合計8個，在除 了上下面21、21的各曲面部分21A、21A、21B、21B的 部分、及一對的長側面22、22的交叉稜線部，形成成爲 略直線狀的如的直線刃2 5 B合計4個，在1個刀片形成： 合計8個曲線刃25 A…及合計4個直線刃25B…。 如上述的結構的刀片，是對於第一刀片安裝座13, -19- 200529957 (14) 使刀片本體20的厚度方向與刀具本體10的徑方向略一 致，將一對的長側面22、22之中的1個朝向刀具旋轉方 向T前方側作爲前面，藉由插通刀片本體20的插通孔 2 0A的夾具螺栓15被螺固安裝。 安裝於第一刀片安裝座13的刀片，是使形成於其的 8個曲線刃25 A…之中的形成於銳角角落部2 4A的1個曲 線刃25 A(特別是形成於構成上下面21、21及短側面23、 23相互交叉的部分的曲面部分21A及長側面22的交叉稜 線部的合計4個曲線刃25A…之中的1個曲線刃25 A)， 從刀具本體10的內周面朝上述徑方向內周側突出的同時 從刀具本體1〇的端面12A(12B)朝上述軸線Ο方向外方側 突出，將連結此曲線刃25A的直線刃25B，從刀具本體 1 0的內周面1 1朝上述徑方向內周側突出。 在這種突出狀態下被配置的曲線刃25A及直線刃 2 5 B，是成爲供加工曲柄軸的銷部（軸部）的外周面用的銷 刃。 且，連結於作爲銷刃的曲線刃2 5 A的刀具旋轉方向T 後方側的曲面部分2 1 A，是隨著朝向刀具旋轉方向T後方 側朝向上述徑方向外周側傾斜的同時，隨著朝向刀具旋轉 方向T後方側朝向上述軸線0方向內方側傾斜，對於作 爲銷刃的成爲曲線刃2 5 A的遊隙面的此曲面部分2 1 A形 成遊隙。 因此，銷刃及曲線刃25A的徑向前角 R(徑方向前 角），是因爲此曲線刃25A隨著朝向上述徑方向外周側朝 -20- 200529957 (15) 向刀具旋轉方向T前方側傾斜，而設定成負（例如_ 8 〇。）。 對於此，銷刃及曲線刃25A的軸向前角a(軸方向前 角），是因爲此曲線刃25A隨著朝向上述軸線〇方向內方 側朝向刀具旋轉方向T後方側傾斜，而設定成正（例如 60° )。 .即，成爲前面的長側面2 2及短側面2 3交叉成銳角的 銳角角落部24A因爲存在，所以即使對於作爲銷刃的成 爲曲線刃2 5 A的遊隙面的曲面部分2 1 A形成遊隙，也可 設定作爲銷刃的曲線刃25A的軸向前角爲正。 且，如上述的結構的刀片，是對於第二刀片安裝座 14，使刀片本體20的厚度方向與刀具本體1〇的軸線〇 方向略一致，使一對的長側面22、22之中的1個朝向刀 具旋轉方向T前方側作爲前面，藉由插通刀片本體20的 插通孔2 0A的夾具螺栓15被螺固安裝。 被安裝於第二刀片安裝座14的刀片，是使形成於其 的8個曲線刃25A…之中的形成於鈍角角落部24B的1個 曲線刃2 5 A (特別是形成於構成上下面2 1、2 1及短側面 23、23是相互交叉的部分的曲面部分21B及長側面22的 交叉稜線部的合計4個曲線刃25 A…之中的1個曲線刃 25A)，從刀具本體10的端面12A(12B)朝上述軸線〇方向 外方側突出。 在這種突出狀態下被配置的曲線刃25A，是成爲供加 工曲柄軸的配重部的側面用的波形刃。200529957 (1) IX. Description of the invention [Technical field to which the invention belongs] The present invention provides a tool for a crank pin milling machine for processing a crank shaft used in, for example, a reciprocating internal combustion engine, and a disposable blade (hereinafter referred to as (Blades), in particular, a mounting mechanism for mounting a tool for a crank pin milling machine to an adapter mounted on a processing machine. [Prior Art] Conventionally, for example, a tool for a built-in crank pin milling machine of Patent Document 1 is known. The tool for a crank pin milling machine forms a plurality of first blade mounts on the inner peripheral surface of the tool body that rotates around the line to form a ring shape, and forms a plurality of second blade mounts on both end surfaces of the tool body. For the first blade mounting seat and the second blade mounting seat, the same kind of blades are respectively installed. This blade is formed by a pair of side surfaces facing the blade body forming a substantially parallelogram-shaped blade body, and a cross ridge line between the upper and lower sides of the blade body, forming a total of eight cutting edges, which are different from the side surfaces of the pair. The pair of side surfaces cut off the obtuse corner area side of the blade body to make the corner angle larger. The other pair of side surfaces are composed of two wall surfaces and formed into a mountain shape on the outer side of the blade body. Protruding. Further, the connection portions of the upper and lower sides of the blade body facing the other pair of side surfaces are each processed into a convex curved surface with a tapered surface. The blade mounted on the first blade mounting base is formed at a sharp edge corner of the blade body which is slightly parallel to the shape of the blade body 200529957 (2). The blade protrudes from the inner peripheral surface of the blade body so that the shaft #forwards. Angle (front angle in the axial direction): positive, radial rake angle (front angle in the radial direction): negative, which becomes the pin edge for machining the outer peripheral surface of the pin portion (shaft portion) of the crank shaft. The blade mounted on the second blade mount has a cutting edge formed at an obtuse corner portion of the blade body that is a slightly parallelogram-shaped flat plate, and protrudes from the end surface of the tool body to make the axial rake angle (front in the axial direction). Angle): Negative, radial rake angle (radial rake angle): Negative, a wavy blade for machining the side of the weight portion of the crank shaft. In such a tool for a crank pin milling machine, a tool can be suppressed by mounting the same type of blade on the first and second blade mounts and cutting each of the cutting edges formed at a total of 8 positions with one blade. fee. In addition, by using a blade having a slightly parallelogram-shaped blade body having the above-mentioned pair of other side surfaces, it is possible to set the blade as a pin blade to the blade mounted on the first blade mount. The axial rake angle of the blade is positive, and the cutting resistance is reduced. A conventional tool for a crank pin milling machine is known, and includes a substantially circular-shaped adapter mounted on a processing machine, and a substantially circular-shaped tool rotated around the line by being mounted on the inner peripheral portion of the adapter. The body is formed on the cutter body: a slightly annular flange portion protruding from the outer circumferential side of the outer circumferential surface in the radial direction, and the adapter is formed: it is received from the inner circumferential surface while being recessed from the outer circumferential side of the radial direction. The flange portion has a slightly annular step portion. In such a tool for a crank pin milling machine, when the tool body is inserted into the inner peripheral portion of the adapter in the axial direction, the flange portion of the tool body and the -8-200529957 (3) step portion of the adapter are in surface contact and Since the radial direction of the tool body overlaps with each other, the tool body is positioned in the axial direction with respect to the adapter. In addition, a plurality of key members are fitted to a plurality of cutout portions recessed from the outer peripheral surface of the cutter body toward the inner peripheral side in the radial direction, and one end surface of the cutter body is pressed by a plurality of pressure plates, so that the cutter body is fixed around the adapter with the adapter. At the same time, the axis of the tool body is slightly aligned with the axis of the adapter, so that the tool body is mounted on the inner periphery of the adapter. However, in such a conventional tool for a crank pin milling machine, although the slightly annular contact surface which can be brought into surface contact with the flange portion of the tool body and the stepped portion of the adapter, the length in the radial direction of the tool body The setting is long and one end surface of the tool body is pressed by a plurality of pressure plates, but there is a problem that a large load in the thrust direction (a load in the axial direction of the tool body) is weak. That is, in the state where the tool body is mounted on the adapter, the flange portion of the tool body or the stepped portion of the adapter is bent due to the load in the thrust direction. The thrust direction (the axial direction of the tool body) is deviated, so the swing accuracy of the plural cutting edges provided on the inner peripheral portion of the tool body is reduced. Further, it is disclosed in Patent Document 2 that a plurality of protrusions protruding from the outer peripheral surface toward the outer peripheral side in the radial direction are formed on the cutter body, and an adapter is formed that is fitted into the aforementioned while recessing from the inner peripheral surface toward the outer peripheral side in the radial direction. The plurality of cutouts for the plurality of projections, the above-mentioned plurality of projections and the plurality of cutouts are directed toward the tool insertion direction with the distance between the pair of side surfaces facing the circumferential direction (the tool body is inserted into the adapter). Cone pin-shaped milling machine tool for tapered surface gradually shrinking in the front side direction. -9- 200529957 (4) When the tool body for a crank pin milling machine is inserted into the inner peripheral portion of the adapter along the axial direction, a plurality of protrusions of the tool body are respectively fitted to the adapter's The plurality of cutout portions allow the tool body to be positioned in the axial direction with respect to the adapter while the tool body is fixed in the circumferential direction with respect to the adapter, and the axis of the tool body is slightly consistent with the axis of the adapter. Then, one end surface of the tool body is pressed by a plurality of pressure plates, so that the tool body is mounted on the inner peripheral portion of the adapter. Conventionally, it is known that a substantially circular adapter is installed on a processing machine, and a tool body for a crank pin milling machine that rotates around the line by being attached to the inner peripheral portion of the adapter. For example, it is disclosed in Patent Document 2 that a plurality of protrusions protruding from the outer peripheral surface toward the outer peripheral side in the radial direction are formed on the cutter body, and an adapter is formed that is recessed from the inner peripheral surface toward the outer peripheral side in the radial direction while fitting the aforementioned The plurality of cutouts of the plurality of projections, the above-mentioned plurality of projections and the plurality of cutouts are respectively formed such that the distance between a pair of side surfaces facing the circumferential direction is directed toward the tool insertion direction (the tool body is inserted into the inner periphery of the adapter). Cutter pin milling machine tool which is reduced in size to the front side of the direction). When such a tool for a crank pin milling machine is inserted into the inner peripheral portion of the adapter in the axial direction, the plurality of protrusions of the tool body are respectively fitted to the plurality of cutout portions of the adapter to make the tool body When the adapter is positioned in the axial direction, the tool body is fixed to the adapter in the circumferential direction, and the axis of the tool body is slightly consistent with the axis of the adapter. In addition, by pressing one end surface of the tool body with a plurality of pressure plates, the tool body can be mounted on the inner peripheral portion of the adapter. -10- 200529957 (5) [Patent Document 1] Japanese Patent Laid-Open No. 2002-46009 [Patent Document 2] Japanese Patent Laid-Open No. 8-1 18125 [Summary of the Invention] (Problems to be Solved by the Invention) However, it discloses In the tool for a crank pin milling machine of Patent Document 1, the axial rake angle is set to be a positive cutting edge as a pin edge, and the blade body is formed into an acute angle corner portion of a blade body that is approximately parallelogram-shaped. Since the pair of side surfaces of the obtuse-corner side are cut off as described above, the radial rake angle of the cutting edge, which is a corrugated blade, formed in the obtuse-corner corner of the blade body becomes negative. Great. For this reason, in the tool for a crank pin milling machine of Patent Document 1, it is currently impossible to obtain an effective solution to reduce the cutting resistance. In addition, the blade body of such a blade is provided with the other pair of side surfaces where the obtuse corner portion is cut as described above. The length of the blade body is only to lengthen the cut portion, and the length of the cutting edge is not sufficient if the length of the cutting edge is not increased. Assuredly, the occupied space of the blade mount formed in the tool body will be increased, and the strength of the tool body will be reduced. In addition, because the shape of the blade body is complicated, its manufacture is difficult, which leads to an increase in processing costs. The present invention has been made in view of the above-mentioned problems, and a first object thereof is to provide a tool body for a crank pin milling machine and a disposable blade mounted on the crank pin milling machine, which can maintain a high degree of strength of the tool body while effectively reducing cutting resistance, and can be easily manufactured. . However, in the tool for a crank pin milling machine of this patent document 2, although the load in the thrust direction is strong in -11-200529957 (6), the positioning of the adapter of the tool body in the axial direction is only because The fitting of the conical protrusions and the conical cuts is 'When the thermal adapter is thermally expanded due to cutting during processing' 'If the tool body is exchanged', this tool body will Offset in the axial direction. That is, the width of the plurality of cutouts formed in the adapter is enlarged due to the thermal expansion of the adapter. If the widened cutouts are fitted into the protrusions of the tool body at room temperature, the tool body will be inserted into the adapter. The inner peripheral portion is too deep, and the swing accuracy of a plurality of cutting edges provided on the inner peripheral portion of the tool body is reduced. The present invention has been made in view of the above-mentioned problems, and a second object is to provide a tool body that does not deviate the tool body from the adapter in the axial direction even with respect to a load in the thrust direction or cutting heat, and can highly maintain the swinging accuracy of the cutting edge. Tools for crank pin milling machine. However, in the tool for a crank pin milling machine of this patent document 2, the gaps between the plurality of protrusions formed at the position of the tool body are opened toward both end face sides of the tool body, and the plural numbers formed in the adapter are formed. The cutouts are open toward both end faces of the adapter. Therefore, the rigidity of the tool body and the adapter cannot be maintained at the respective heights. Accordingly, when the tool body is mounted on the adapter, the rigidity of the tool body cannot be maintained at a high level, and a deviation from the tool body of the adapter occurs. The swing accuracy of a plurality of cutting edges provided on the inner peripheral portion of the tool body is reduced. The present invention is conceived in view of the above-mentioned problems, and a third object is to provide a method for maintaining the mounting rigidity when mounting a tool body on an adapter without causing deviation of the adapter from the tool body, and continuously maintaining the cutting edge. -12- 200529957 (7) Tool for crank pin milling machine with swing accuracy. (Means for Solving the Problems) In order to solve the above-mentioned problems and achieve the first object, a cutter for a curved pin milling machine according to the present invention is characterized in that it is formed on a peripheral surface of a tool body that is formed into a substantially ring shape that rotates around a shaft edge. The first blade mounting base forms a second blade mounting base on an end surface of the blade body. In the first blade mounting, a pair of side surfaces and an upper surface of the blade body are arranged on opposite sides of the blade body that has a substantially trapezoidal flat plate shape. The disposable blade with a cutting edge at the lower cross ridge portion is installed so that the thickness direction of the blade body is slightly consistent with the radial direction of the front cutter body, so that the cutting edge formed at the sharp corner portion of the blade body can be performed. For cutting, in the second blade mounting seat, the disposable blade is installed so that a thickness direction of the blade body is slightly consistent with an axial direction of the tool body, so that a cutting edge formed at an obtuse corner of the blade body can be performed. Cutting. In addition, the blade of the present invention is an blade mounted on a crank pin milling machine tool of the present invention, and is characterized in that a pair of side surfaces and upper and lower surfaces of the blade body are arranged on opposite sides of a blade body having a substantially trapezoidal flat plate shape. Fork ridges form cutting edges. In order to solve the above-mentioned problem and achieve the second object, a cutter for a curved pin milling machine according to the present invention includes an adapter mounted on a processing machine, and a slightly circular ring that can be rotated around the axis by being mounted on the adapter. Specifically, the shape of the blade is characterized in that the blade body is formed with a slightly annular flange portion protruding from the radial direction of the blade body from the entire circumference of the peripheral surface of the blade body, at the angle of the shank round seat,刖 前 的 本本 手 由 本 朝 • 13- 200529957 (8) The connector is formed: from the entire circumference of its peripheral surface, it is recessed in the radial direction of the tool body while receiving the slightly annular stepped portion of the flange portion In a state where the tool body is mounted on the adapter, the flange portion and the stepped portion are brought into surface contact and overlap with each other in the radial direction of the tool body, and the diameter of the tool body at the contact surface is The length in the direction is set within the range of D0.1D to 1.0D with respect to the thickness of the aforementioned tool body. In order to solve the above-mentioned problem and achieve the third object, a tool for a crank pin milling machine according to the present invention includes an adapter mounted on a processing machine, and a substantially circular shape that can be rotated around the axis by being mounted on the adapter. A ring-shaped tool body is characterized in that the tool body is formed with a substantially ring-shaped flange portion that protrudes from the entire circumference of the peripheral surface of the tool body in the radial direction of the tool body, and is formed in the adapter with the periphery of the tool body. The entire circumference of the surface is recessed in the radial direction of the tool body while receiving a slightly annular stepped portion of the flange portion, a wall surface facing the stepped portion of the flange portion, and the flange portion of the stepped portion. One of the facing wall surfaces forms a convex portion protruding in the axial direction of the tool body, and a concave portion fitted in the convex portion while recessing in the axial direction of the tool body is formed on the other side. Further, in the present invention, the convex portion gradually decreases the distance between the pair of side surfaces facing the circumferential direction toward the protruding direction, and the concave portion causes the distance between the pair of side surfaces facing the circumferential direction toward the concave direction. It is better to be smaller. (Effects of the Invention) According to the present invention, the blade body of the same type of blade mounted on the first and second blade mounting bases is formed into a slightly trapezoidal flat plate as described above -14-200529957 (9), and is mounted on the first The blade of the blade mount uses a cutting edge formed at an acute angle corner of the blade body as a pin blade, and the blade mounted on the second blade mount uses a cutting edge formed at an obtuse corner portion of the blade body as a wave shape. The cutting edge is used for cutting, so that the rake angle in the axial direction is set to be positive for the cutting edge which is an insert pin edge attached to the first insert holder. In addition, the blade body is formed into a substantially trapezoidal flat plate shape, and the other side surfaces different from the pair of side surfaces are each composed of one wall surface, and the blades mounted on the second blade mounting seat are cut as a corrugated blade. The blade, whose radial rake angle, does not become significantly larger toward the negative angle side that is set to negative. Therefore, in the present invention, the cutting resistance can be effectively reduced, and the crank shaft can be processed with high accuracy and stability. In addition, the other pair of side surfaces of the blade body are each composed of one wall surface. Even if the length of the blade body is not long, the cutting edge length can be sufficiently ensured, and the space occupied by the blade mounting seat formed on the tool body can be reduced. The height maintains the strength of the tool body. Furthermore, since the blade body has a simple shape, its manufacturing is easy, and it is possible to reduce the processing cost. Moreover, according to the present invention, in a state where the tool body is mounted on the adapter, the flange portion of the tool body and the stepped portion of the adapter are in surface contact and overlap each other in the radial direction of the tool body. The adapter is positioned in the axial direction, so even if the tool body is exchanged during the thermal expansion of the cutting thermal adapter, the exchanged tool body will hardly deviate from the adapter in the axial direction. In addition, the flange portion of the tool body and the stepped portion of the adapter are available. • 15- 200529957 (10) The slightly annular contact surface that is eroded, because the degree in the radial direction of the tool body is set to 1. 〇 Below D, even if a large load is applied in the thrust direction, the flange portion or the stepped portion is not easily bent, and the tool body does not deviate from the axis direction of the adapter due to the load in the thrust direction. In addition, for the contact surface having a substantially circular shape, since the length of the tool body in the radial direction is set to 0.1 D or more, the bit function of the adapter to the tool body is not impaired. Therefore, the swing accuracy of the counter cutting edge continuously provided on the inner peripheral portion of the cutter body can be maintained at a high level, and the machining accuracy of the crank shaft can be further improved. In the present invention, the cutter body is formed so as to protrude from its peripheral surface in a direction. The plurality of protrusions are formed in the adapter: a plurality of cutouts recessed from the circumferential direction of the adapter, and the plurality of protrusions are respectively fitted in the state where the tool body is mounted on the front adapter. In combination with the plurality of cutout portions, it is preferable that the tool body is fixed to the adapter in the circumferential direction while the axis of the tool body and the axis of the adapter are slightly consistent. Moreover, according to the present invention, in the state where the tool body is mounted on the adapter, the convex portion is fitted into the concave portion, and the tool body is positioned in the axial direction for the adapter, so that the tool body is positioned in the axial direction with respect to the adapter. The circumferential direction is fixed, and the axis of the tool body is slightly consistent with the axis of the adapter. Furthermore, the convex portion is formed to protrude from the wall surface of the slightly annular flange portion or the difference portion toward the axial direction of the tool body, and the portion is the above-mentioned from the slightly annular step portion or the flange portion. The wall surface is recessed toward the axial direction of the blade body, so the long negative negative fixed constant number located between the convex portions and the zero diameter toward the -W-one square shape is dug between the recesses and recesses -16- 200529957 (11) Gaps or recesses, they will not open toward the two end surfaces of the cutter body or the two end surfaces of the adapter, and they can be individually separated "Stomach ® {呆 ί 寺 力 胃 本 1_ ί 妾 器% 刚 j 彳 生 ° Therefore, because The mounting rigidity when the tool body is mounted on the adapter can be maintained at a high level, so that the tool body of the adapter does not deviate '. The swing accuracy of the plurality of cutting edges provided in the tool body can be continuously maintained. Further, it is possible to Improve machining accuracy of crank shaft. [Embodiment] [Example 1] Hereinafter, a tool for a crank pin milling machine according to Example 1 of the present invention will be described with reference to Figs. 1 to 3. The tool body I 0 ′ of the tool for a crank pin milling machine according to the first embodiment of the present invention is a substantially circular ring centered on the axis 0 rotating around the axis 0 as shown in the enlarged view of the main part of FIGS. 1 to 2. shape. & This tool body 1 〇 is formed on the inner peripheral surface II ′ of the inner peripheral side in the radial direction, is a plurality of first blade mounts 13..., is formed at an equal interval along the IH @ of the tool body 10, and faces the axis. Both sides of the outer side of the direction 〇 12A '12B on the inner peripheral surface 1 1 side are formed with a plurality of second blades ^ M 1 4 ...' formed at equal intervals along the circumferential direction of the tool body 10. The plurality of first blade mounting m 13... ′ Formed on the inner peripheral surface 11 of the tool body 10 are arranged in the circumferential direction near one end surface 12A of the two end surfaces 12A ′ of the tool body 10 and at Near the other 12B, they are arranged alternately in the circumferential direction of the tool body 10. The second plurality of cutters formed on one end surface 12A of the tool body 10-17- 200529957 (12) The sheet mounts 1 4... Are arranged in the circumferential direction and are disposed on the inner periphery of the other end surface 12B. The plurality of first blade mounts 13 on the surface 11 are slightly rearward in the tool rotation direction T, and the plurality of second blade mounts 14 formed on the other end surface 12B of the tool body 10 are also arranged in the circumferential direction and are each separately The plurality of first blade mounts 13... Arranged on the inner peripheral surface 11 formed in the vicinity of one end surface 1 A is slightly rearward in the tool rotation direction T. The blade body 20 of the blade mounted on the first blade mounting base 13... And the second blade mounting base 14... As described above is formed into a substantially trapezoidal flat plate shape as shown in FIG. The upper and lower surfaces 21 and 21, which are arranged opposite to each other at both ends in the direction, and a pair of long side surfaces 2 2, 2 2 (—square one Opposite side surfaces), and a pair of short side surfaces 23, 23 (other side surfaces of a pair) arranged parallel to each other at both ends in the longitudinal direction of the blade body 20. Therefore, the blade body 20 viewed from above (as viewed along the thickness direction of the blade body 20), as shown in FIG. 3 (a), includes a pair of sharp-angled corner portions 24A, 24A having corner angles that are approximately the same as each other. And a pair of obtuse corner portions 24B and 24B having the same corner angles. Here, a general insertion hole 20A ′ is inserted through the blade body 20 in a substantially central portion of the blade body 20 to insert a clamp bolt used when the blade is screwed (the left and right sides of FIG. 3 (b)). Direction, and the upper and lower surfaces 21 are formed to be slightly perpendicular to each other). The pair of long sides 22 and 22 of the blade body 20 are formed by a slightly flat surface which is slightly parallel to the thickness direction of -18-200529957 (13). The thickness of the pair of blade body 20 is short. The side surfaces 2 3 and 2 3 are also each composed of a slightly flat surface that is slightly parallel to the thickness direction of the blade body 20. The upper and lower surfaces 21 and 21 of the blade body 20 are on both ends of the blade body 20 in the longitudinal direction (the left-right direction in FIG. 3 (a)), and the pair of short sides 23, 23 intersects, but as shown in FIG. 3 (c), both ends of the upper and lower surfaces 21 and 21 in the longitudinal direction are processed into convex curved surfaces, respectively. In the upper and lower surfaces 21, the connecting portion of the pair of acute-angled corner portions 24A and 24A facing one short side surface 23 is a curved surface smoothly connected to the short side surface 23 as shown in the left area of FIG. 3 (0). Part 21 A, the connecting part of the pair of obtuse corner portions 24B, 24B facing the short side 23 of the other side, is not smoothly connected to the short side 23 as shown in the right area diagram of 3 (c) Curved portion 21 B. In the blade body 20, a cutting edge is formed at a cross ridge portion of a pair of long side surfaces 22, 22 and upper and lower surfaces 21, 21. In detail, each curved portion of upper and lower surfaces 21, 21 is formed. 21A, 21 A, 21B, 21B, and a pair of long side surfaces 22, 22 are crossed with a ridgeline portion forming a slightly convex curved edge 2 5 A. There are 8 curved surfaces in total, except for the upper and lower surfaces 21 and 21 21A, 21A, 21B, and 21B, and a pair of long side surfaces 22, 22 are formed by the ridges of a pair of straight edges, such as a straight edge 2 5 B, a total of four, formed by one blade: a total of 8 Curved blade 25 A ... and a total of 4 straight blades 25B ... For the first blade mount 13, -19- 200529957 (14) Make the thickness direction of the blade body 20 and the radial direction of the tool body 10 slightly match, and rotate one of the pair of long sides 22, 22 toward the tool The front side in the direction T is used as a front, and the bolts 15 inserted through the insertion holes 20A of the blade body 20 are screwed. The blades attached to the first blade mount 13 are formed with eight curved edges. Among the 25 A ... one curved edge 25 A formed at the acute corner portion 2 4A (especially formed at the curved surface portion 21A and the long side surface 22 constituting a portion where the upper and lower surfaces 21 and 21 and the short side surfaces 23 and 23 intersect each other) One of the four curved edges 25A, in total, at the intersection ridge portion (a curved edge 25 A) protrudes from the inner peripheral surface of the tool body 10 toward the above-mentioned radial inner peripheral side, and from the end surface 12A (12B of the tool body 10) ) Protrudes outward on the axis O direction, and the straight edge 25B connecting the curved edge 25A protrudes from the inner peripheral surface 11 of the tool body 10 toward the inner peripheral side in the radial direction. It is arranged in this protruding state. The curved edge 25A and the straight edge 2 5 B are pins for machining the crank shaft The pin edge for the outer peripheral surface of the shaft (shaft portion). The curved surface portion 2 1 A connected to the tool rotation direction T on the curved edge 2 5 A as the pin edge is toward the rear side of the tool rotation direction T Inclined toward the outer peripheral side in the radial direction, and inclined toward the inward side of the axis 0 direction toward the rear side of the tool rotation direction T, the curved surface portion 2 1 of the clearance surface which is a curved edge 2 5 A as a pin blade The clearance is formed by A. Therefore, the radial rake angle R (radial rake angle) of the pin edge and the curved edge 25A is because the curved edge 25A faces -20- 200529957 (15) toward the tool as it goes toward the outer peripheral side of the radial direction. The rotation direction T is inclined forward, and is set to negative (for example, _ 8 〇. ). In this regard, the axial rake angle a (axial rake angle) of the pin edge and the curved edge 25A is because the curved edge 25A is set to be positive as the inward side of the axis 0 direction is inclined toward the rear side of the tool rotation direction T. (E.g. 60 °). That is, since the acute angle corner 24A that forms the front long side surface 2 2 and the short side surface 2 3 intersects at an acute angle, it is formed even for the curved surface portion 2 1 A of the clearance surface that becomes the curved edge 2 5 A as the pin blade. The clearance can also be set to a positive rake angle in the axial direction of the curved edge 25A as the pin edge. In addition, for the blade having the structure described above, for the second blade mounting base 14, the thickness direction of the blade body 20 is slightly consistent with the axis 0 direction of the tool body 10, and 1 of a pair of long sides 22, 22 is formed. The front side facing the tool rotation direction T is used as a front surface, and the clamp bolts 15 inserted through the insertion holes 20A of the blade body 20 are screwed. The blade mounted on the second blade mount 14 is one curved edge 2 5 A formed in the obtuse corner portion 24B among the eight curved edges 25A formed in the blade (especially formed in the upper and lower surfaces 2). 1, 2 1 and the short side surfaces 23 and 23 are curved surface portions 21B intersecting with each other, and one of the four curved edges 25 A (a total of four curved edges 25 A. The end surface 12A (12B) of the projecting portion protrudes outward on the axis 0 direction. The curved edge 25A disposed in this protruding state is a corrugated edge for use as a side surface of a weight portion for processing a crankshaft.
且，連結作爲波形刃的曲線刃25A的刀具旋轉方向T •21 - 200529957 (16) 後方側的曲面部分2 1 B，是隨著朝向刀具旋轉方向τ後方 側朝向上述軸線0方向內方側傾斜的同時，隨著朝向刀 具旋轉方向Τ後方側朝向上述徑方向外周側傾斜，對於作 爲波形刃的成爲曲線刃25Α的遊隙面的此曲面部分21Β 形成遊隙。 因此，作爲波形刃的曲線刃25Α的軸向前角Α(軸方 向前角），是使此曲線刃25A隨著朝向上述軸線〇方向內 方側朝向刀具旋轉方向T前方側傾斜，而設定成負（例如 -60° )。且，作爲波形刃的曲線刃25A的徑向前角R(徑方 向前角），是使此曲線刃25A隨著朝向上述徑方向外周側 朝向刀具旋轉方向T前方側傾斜，而設定成負（例如 -170。）。 這種結構的曲柄銷銑床用刀具，是在加工機的刀具安 裝部，是被安裝成使刀具本體10的軸線Ο與主軸一致， 橫跨挾盤的曲柄軸貫通刀具本體10的內空部的狀態下， 藉由一邊沿著曲柄軸的軸線（刀具本體1 〇的軸線〇)方向 移動，一邊朝刀具本體10的軸線Ο周圍自轉的同時，朝 曲柄軸的軸線周圍公轉，就可將此曲柄軸加工成預定形 狀。 如以上說明，本發明的實施例1的曲柄銷銑床用刀具 中’首先，應形成於刀具本體1〇的安裝於第一刀片安裝 座13…及第二刀片安裝座14…的刀片，因爲使用同一種 類，所以可將以1個刀片形成於合計8處的曲線刃 25 A…，作爲銷刃或是波形刃各別進行切削，就可抑制工 -22- 200529957 (17) 具費。 而且’這種刀片的刀片本體20，因爲形成具備上述 如的一對的長側面2 2、2 2及一對的短側面2 3、2 3的略梯 形平板狀’所以對於被安裝於第一刀片安裝座1 3的刀 片，作爲銷刃的曲線刃 25A的軸向前角 A可以設定成 正。且，刀片本體20的短側面23、23是各別藉由1個略 平坦面，對於被安裝於第二刀片安裝座14的刀片的作爲 波形刃的曲線刃25 A，其徑向前角R，雖設定成負，不會 朝被設定成負的負角側明顯變大。 ® 因此，依據本發明的實施例1，將銷刃上曲線刃25A 的軸向前角 A設定成正，就可效果地降低切削阻力，隨 此，可繼續進行高精度且穩定曲柄軸的加工。 進一步，在本發明的實施例1中，刀片本體20的短 側面23、23是各別藉由1個略平坦面構成，即使刀片本 體20的長度不長也可充分確保切刃長度，就可縮小形成 於刀具本體10的刀片安裝座13的占有空間，可以高度保 持此刀具本體1 〇的強度。 · 加上，刀片本體20，因爲只是形成略梯形平板狀的 簡略的形狀，所以其製造容易，也可以達成加工成本的降 低。 . 然而，在上述本發明的實施例1中，雖以內裝型的曲 柄銷銑床用刀具說明本發明的適用例’但是不限定於此’ 在刀具本體，在朝向徑方向外周側的外周面，形成複數第 一刀片安裝座，在朝向軸線方向的兩端面的各外周面側， -23- 200529957 (18) 形成複數第二刀片安裝座，對於這些第一刀片安裝座 二刀片安裝座分別安裝刀片，即所謂外裝型的曲柄銷 用刀具在本發明也可以適用。 [實施例2] 以下，參照添付圖面說明本發明的實施例2。 本發明的實施例2的曲柄銷銑床用刀具，是如第4 及第5圖所示，具備：被安裝於加工機的略圓環狀的轉 器2-10;及藉由***此轉接器2_10的內周部的同時被 裝於轉接器2-10的內周部，而以旋轉於軸線〇周圍軸 〇爲中心的略圓環狀的刀具本體2-50。 然而，在刀具本體2-50的內周部，雖安裝有複數 有供加工曲柄軸的銷部（軸部）的外周面用的銷刃或供加 曲柄軸的配重部的側面用的作爲波形刃的切刃的抛棄式 片’但是在圖面中省略。 如第6圖及第7圖所示，在刀具本體2-50的外周 2-51中，刀具***方向A的後方側（將刀具本體2-50插 轉接器2 - 1 0的內周部時的方向的後方側，第6圖及第 圖的上方側）的領域的全周部分，是朝向刀具本體2-50 徑方向外周側（第6圖及第7圖的右方側）突出。 因此，在刀具本體2-50形成：從其外周面2-51的 周朝徑方向外周側突出的略環狀的凸緣部2_52，在此 緣部2-52形成：朝向刀具***方向A的前方側的略環 的拘束面2 - 5 3。 第 床 圖 接 安 線 具 工 刀 面 入 7 的 全 凸 狀 -24· 200529957 (19) 進一步’如第7圖所示，在刀具本體2-50的外周面 2 - 5 1中，刀具***方向a的後方側的領域的複數處，是 比凸緣部2-52更朝向刀具本體2-50的徑方向外周側突 出。 由此，在刀具本體2-50中，從其外周面部分地突出 的成爲略直方體狀的複數（例如4個以上）的突起部2-54···，是在刀具本體2-50的周方向略等間隔形成，在複 數突起部2-54···，如第8圖所示，各別形成朝向刀具旋 轉方向T的前方側及後方側（周方向）的一對的壁面2 _ 5 5、 2-55。 在此，如第8圖所示，在1個突起部2-54的一對的 壁面2-5 5、2-55之中，位置在刀具旋轉方向T之後方側 朝向刀具旋轉方向T的後方側的壁面2 - 5 5，是沿著刀具 ***方向A(刀具本體2-50的軸線〇方向、刀具本體2-50 的厚度方向）延伸，位置於刀具旋轉方向T的前方側朝向 刀具旋轉方向 T前方側的壁面2-55，是隨著朝向刀具插 入方向A的前方側（第8圖的下方側）朝向刀具旋轉方向T 之後方側傾斜。 一方面，如第6圖及第7圖所示，在轉接器2-10的 內周面2 _ 1 1，刀具***方向 A的後方側的領域的全周部 分，是朝向刀具本體2-50的徑方向外周側凹陷。 因此，在轉接器2 - 1 0中，從其內周面2 · 1 1的全周朝 徑方向外周側凹陷的同時朝向轉接器2-10的刀具***方 向A的後方側的一方的端面2 -1 6開口，形成供承接上述 -25- 200529957 (20) 凸緣部2-52用的略環狀的段差部2-12，在此段差部2-12 形成：朝向刀具***方向 A之後方側的略環狀的拘束面 2-13° 進一步，如第7圖所示，在轉接器2-10的內周面2-1 1，刀具***方向 A的後方側的領域的複數處，是比段 差部2-12更朝向刀具本體2-50的徑方向外周側凹陷。 由此，在轉接器2-10中，形成從其內周面部分地凹 陷的略直方體狀，供嵌合上述的複數突起部2-54···用的 複數（例如4個以上）的切口部2-14···，是在轉接器2-10 的周方向略等間隔形成，在複數切口部2-14···中，如第8 圖所示，各別形成朝向刀具旋轉方向T的前方側及後方側 (周方向）的一對的壁面2-15、2-15。 在此，如第8圖所示，1個切口部2-14的一對的壁 面2 -1 5、2 -1 5之中，位在刀具旋轉方向T的後方側朝向 刀具旋轉方向T的前方側的壁面2 -1 5，是沿著刀具*** 方向A(刀具本體2-50的厚度方向，刀具本體2-50的軸線 Ο方向）延伸，位在刀具旋轉方向T的前方側朝向刀具旋 轉方向T後方側的壁面2-1 5，是隨著朝向刀具***方向A 的前方側（第8圖的下方側）朝向刀具旋轉方向T之後方側 傾斜。 使刀具本體2-50朝向刀具***方向A的前方側沿著 軸線〇方向***轉接器2-10的內周部的話，刀具本體2-50的凸緣部2-52會被承接於轉接器2-10的段差部2-]2，且，刀具本體2-50的複數突起部2-54···會各別嵌合 -26- 200529957 (21) 轉接器2-10的複數切口部2-14···。 刀具本體2-50的凸緣部2-52是藉由承接於轉接器2_ 10的段差部2-12，使凸緣部2-52的拘束面2-53及段差 部2 -1 2的拘束面2 -1 3，以沿著刀具本體2 - 5 0的徑方向延 伸形成略環狀的接觸面，面接觸並在刀具本體2-50的徑 方向相互重疊。 如此，凸緣部2-52的拘束面2-53及段差部2-12的 拘束面2-13是藉由面接蝕，使刀具本體2-50對於轉接器 2-10在軸線Ο方向被定位。 在此，在本發明的實施例2，是如第6圖及第7圖所 示’對於凸緣部2-52的拘束面2-53及段差部2-12的拘 束面2-13可面接觸的略環狀的接觸面，使沿著其刀具本 體2-50的徑方向的長度d即接觸面的寬，是對於刀具本 體2-50的厚度D(沿著刀具本體2-50的軸線Ο方向長 度）’被設定在0.1D〜1.0D的範圍。 刀具本體2-50的複數突起部2-54···是藉由各別嵌合 於轉接器2-10的複數切口部2-14···，分別使各突起部2-5 4…的一對的壁面2-5 5、2-5 5及各切口部2 - M…的一對 的壁面2 - 1 5、2 -1 5相互面接觸。 如此’各突起部2-54的一對的壁面2-55、2-55及各 切口部2-14的一對的壁面2-15、2-15是藉由分別面接 觸’使刀具本體2-50對於轉接器2-10在周方向被固定的 同時’使刀具本體2-50的軸線Ο與轉接器2-10的軸線略 一致。 -27- 200529957 (22) 如上述，刀具本體2-50***轉接器2-10的內周部 使刀具本體2 - 5 0對於轉接器2 - 1 0在軸線0方向被定位 同時，刀具本體2-50是對於轉接器2-10在周方向被 定，且，在刀具本體2-50的軸線〇與轉接器2-10的軸 略一致的狀態下，以複數（例如4個以上）的壓板2-30··· 藉由按壓朝向刀具本體2-50的刀具***方向A的後方 的一方的端面2-56，使刀具本體2-50被強力安裝於轉 器2-10的內周部。 壓板2-30，是形成外周部的一部分具有呈直線狀 切除的切口部2-31的略圓板狀，在刀具本體2-50*** 接器2-10的內周部的狀態下，藉由螺絲2-33被螺固在 成於轉接器2-10的上述端面2-16的略圓形的锪孔部2_ 內，且使刀具本體2-50的上述端面2-56也有一部分插 該鎔孔部2-32內。 此壓板2-3 0，在刀具本體2-50***轉接器2-10的 周部的狀態下，是配置成與在周方向相鄰接的複數突起 2-54···(在周方向相鄰接的複數切口部2-14···)彼此之間 在周方向略等間隔。 壓板2-30，是藉由鬆緩螺絲2-33，在锪孔部2-32 就可以螺絲2-33爲中心轉動自如，藉由轉動壓板2-30 切口部2 - 3 1位在刀具本體2 - 5 0的徑方向內周側，就可 刀具本體2-50***轉接器2-10的內周部，或將刀具本 2-50從轉接器2-10的內周部取下。相反地，藉由轉動 板2-30使切口部2-31不位在刀具本體2-50的徑方向 的 固 線 側 接 被 轉 形 3 2 入 內 部 內 使 將 體 壓 內 -28- 200529957 (23) 周側後，旋緊螺絲2 - 3 3，就可將已***轉接器2 _丨〇的內 周部的刀具本體2 - 5 0，強力地安裝於此轉接器2 - 1 〇的內 周部。 且，在藉由壓板2_3〇..·按壓刀具本體2-50的一方的 端面2-56(正確是總孔部2-32的底面），將刀具本體2-50 強力安裝在轉接器2-10的內周部的狀態下，位在各壓板 2-30的最刀具本體2-50的徑方向內周側部分，是配置成 比從刀具本體2-50的外周面2_51突出形成的凸緣部2_52 更靠近刀具本體2-50的徑方向內周側。 迨種結構的曲柄銷鉄i床用刀具’是在使橫跨挟盤的曲 柄軸貫通刀具本體2 - 5 0的內空部的狀態下，藉由一邊沿 著曲柄軸的軸線（刀具本體2-50的軸線〇)方向移動，一邊 朝刀具本體2-50的軸線0周圍自轉的同時，朝曲柄軸的 軸線周圍公轉，就可將此曲柄軸加工成預定形狀。 依據以上說明的本發明的實施例2的曲柄銷銑床用刀 具，因爲在刀具本體2-50被安裝於轉接器2-10的狀態 下’藉由使刀具本體2-50的凸緣部2-52及轉接器2-10 的段差部2-12面接觸並在刀具本體2-50的徑方向相互重 疊’就可使刀具本體2-50對於轉接器2-10在軸線〇方向 被定位’所以即使在轉接器2-1 0因切削熱而熱膨脹時交 換刀具本體2-50，此新交換的刀具本體2-50也幾乎不會 對於轉接器2 -1 〇在軸線〇方向產生偏離。 而且，對於刀具本體2-50的凸緣部2-52及轉接器2-1〇的段差部2-12是可面接觸的略環狀的接觸面，因爲設 -29- 200529957 (24) 定其刀具本體2_5〇的徑方向的長度d爲1.0D以下，所 即使在推力方向施加大的負荷’凸緣部2 - 5 2或段差部 12也不易彎曲，可以抑制因推力方向的負荷而使刀具 體2 - 5 0對於轉接器2 -1 〇在軸線0方向偏離的現象。旦 對於此略環狀的接觸面，因爲設定其刀具本體2-50的 方向的長度d爲0.1 D以上’所以不會無法對於刀具本 2-50的轉接器2-10確實定位。 然而，在上述略環狀的接觸面中的刀具本體2-50 徑方向的長度d，是設定在0.2D〜0.4D的範圍更佳。 因此，在本發明的實施例2，即使因切削熱或在推 方向的負荷等的原因，刀具本體2-50也不會對於轉接 2 -1 〇在軸線〇方向產生偏離，可高度保持持續設在刀 本體2-50的內周部的複數切刃的擺動精度，進一步， 以提高曲柄軸的加工精度。 且，在本發明的實施例2，是藉由將形成於刀具本 2-50的複數突起部2-5心··各別嵌合於形成於轉接器2-的複數切口部2-1 4…，就可將刀具本體2-5 0對於轉接 2-10在周方向被固定的同時，使刀具本體2-50的軸線 與轉接器2 -1 0的軸線略一致，藉由簡略的結構，就可 容易進行在這種轉接器2-10的周方向的固定及對位。 在此’對於突起部2-54或突起部2-54嵌合的切口 2 - 14的形狀’並非限定於第8圖所示，例如第9圖及 1 〇圖也可以。 如第9圖所示的第1變形例中，]個突起部2_54 以 本 1 徑 體 的 力 器 具 可 體 10 器 0 以 部 第 的 -30- 200529957 (25) 一對的壁面2-55、2-55之中，位在刀具旋轉方向τ的後 方側朝向刀具旋轉方向Τ的後方側的壁面2 - 5 5，是隨著 朝向刀具***方向Α的前方側朝向刀具旋轉方向τ的前 方側傾斜’位在刀具旋轉方向T的前方側朝向刀具旋轉方 向T前方側的壁面2_5 5，是隨著朝向刀具***方向a的 前方側朝向刀具旋轉方向T的後方側傾斜。對應此，1個 切口部2-14的一對的壁面2-15、2-15之中，位在刀具旋 轉方向T的後方側朝向刀具旋轉方向τ的前方側的壁面 S-1〗’是隨著朝向刀具***方向a的前方側朝向刀具旋轉 方向T的前方側傾斜，位在刀具旋轉方向τ的前方側朝 向刀具旋轉方向T後方側的壁面2-15，是隨著朝向刀具 ***方向 A的前方側朝向刀具旋轉方向T的後方側傾 斜。 且，如第1 0圖所示的第2變形例中，1個突起部2 -54的一對的壁面2-55、2-55的雙方，是沿著刀具***方 向 A延伸，對應此，個切口部2 _；[ 4的一對的壁面2 _ U、2-15的雙方，也沿著刀具***方向A延伸。 然而，在上述本發明的實施例2中，雖說明本發明適 用於刀具本體是安裝於轉接器的內周部的所謂內裝型的曲 柄銷銑床用刀具，但是不限定於此，本發明也可以適用於 力具本體是安裝於轉接器的外周部的所謂外裝型的曲柄銷 銳床用刀具。 此情況，在刀具本體2-50形成：從其內周面的全周 朝徑方向內周側突出的略環狀的凸緣部、及從相同的內周 -31 - 200529957 (26) 面朝徑方向內周側突出的複數突起部，在轉接器2 - 1 〇， 形成從其外周面的全周朝徑方向內周側凹陷的同時承接上 述凸緣部的略環狀的段差部，並形成從相同的外周面朝徑 方向內周側凹陷的複數切口部。 .[實施例3] 以下，參照圖面說明本發明的實施例3。 本發明的實施例3的曲柄銷銑床用刀具，是如第i } 圖及第12圖所示，具備··安裝於加工機的略圓環狀的轉 接器3-10;及藉由***此轉接器3-10的內周部的同時安 裝於轉接器3 - 1 0的內周部，以旋轉於軸線〇周圍的軸線 〇爲中心的略圓環狀的刀具本體3-50。 然而，在刀具本體3-50的內周部，安裝複數：具有 加工曲柄軸的銷部（軸部）的外周面用的銷刃或加工曲柄軸 的配重部的側面用的作爲波形刃的切刃的抛棄式刀片，但 是在圖面中省略。 如第14圖及第15圖所示，在刀具本體3-50的外周 面3-51，刀具***方向A的後方側（將刀具本體3-50*** 轉接器3 - 1 0的內周部時的方向的後方側，第1 5圖的下方 側）的領域的全周部分，是朝向刀具本體3 - 5 0的徑方向外 周側突出。 因此，在刀具本體3-50形成：從其外周面3-51的全 周朝徑方向外周側突出的略環狀的凸緣部3 - 5 2，此凸緣 部3 - 5 2，是具有朝向刀具***方向A的前方側（第1 5圖 -32- 200529957 (27) 的上方側）的略環狀的壁面3 - 5 3。 進一步，如第14圖及第15圖所示，在凸緣部3-52 的上述壁面3-53(與後述段差部3-12相面對的壁面3-53)，是形成複數：朝向刀具本體3-50的軸線0方向，即 刀具***方向A的前方側突出的凸部3-54。 由此，在凸緣部.3-52中，從其壁面3-53朝向刀具插 入方向 A的前方側部分地突出的成爲略直方體狀的複數 (例如4個以上）的凸部3-54，是在刀具本體3-50的周方 向略等間隔配置，複數凸部3-54是如第15圖所示，各別 具有朝向刀具旋轉方向T的前方側及後方側（周方向）的一 對的側面3 - 5 5、3 - 5 5。 在此，如第15圖所示，1個凸部3-54的一對的側面 .3 - 5 5、3 - 5 5之中，位在刀具旋轉方向T的前方側朝向刀具 旋轉方向T的前方側的側面3 - 5 5，是隨著朝向刀具*** 方向A的前方側朝向刀具旋轉方向T的後方側傾斜，位 在刀具旋轉方向T的後方側朝向刀具旋轉方向T的後方 側的側面3 - 5 5，是隨著朝向刀具***方向 A的前方側朝 向刀具旋轉方向T的前方側傾斜。 即，凸部3-54的一對的側面3-55、3-55，是使其間 的距離隨著朝向凸部3-54的突出方向（刀具***方向A的 前方側）漸漸變小地斜。 一方面，如第16圖及第17圖所示，在轉接器3-10 的內周面3-11，刀具***方向A的後方側（第17圖的上 方側）的領域的全周部分，是朝向刀具本體3 - 5 0的徑方向 -33- 200529957 (28) 外周側凹陷。 因此，在轉接器3-10中，在從其內周面3-11的全周 朝徑方向外周側凹陷的同時朝向轉接器3 - 1 0的刀具*** 方向A的後方側的一方的端面3 - 1 7開口，形成供承接上 述凸緣部3-52用的略環狀的段差部3-12，此段差部3-12,是成爲具有朝向刀具***方向A的後方側（第17圖在 的上方側）的略環狀的壁面3-13。 進一步，如第16圖及第17圖所示，在段差部3-12 的上述壁面3-13(與上述凸緣部3-52相面對的壁面3-13)，是形成複數：朝向刀具本體3-50的軸線Ο方向，即 刀具***方向A的前方側凹陷的凹部3-14。 由此，在段差部3 -1 2形成：從其壁面3 -1 3朝向刀具 ***方向 A的前方側部分地凹陷的略直方體狀，供嵌合 上述的複數凸部3-54用的複數（例如4個以上）的凹部3-1 4，是在轉接器3 · 1 0的周方向略等間隔配置，複數凹部 3 -1 4是如第1 7圖所示，各別具有朝向刀具旋轉方向T的 前方側及後方側（周方向）的一對的側面3-15、3-15。 在此，如第1 5圖所示，1個凹部3 - 14的一對的側面 3-15、3-15之中，位在刀具旋轉方向T的前方側朝向刀具 旋轉方向T的後方側的側面3 -1 5，是隨著朝向刀具*** 方向A的前方側朝向刀具旋轉方向T的後方側傾斜’但 位在刀具旋轉方向T的後方側朝向刀具旋轉方向T的前 方側的壁面3 -1 5，是隨著朝向刀具***方向Α的前方側 朝向刀具旋轉方向T的前方側傾斜。 -34- 200529957 (29) 即，凹部3 - 1 4的一對的側面3 - 1 5、3 - 1 5，是使 的距離隨著朝向凹部3-14的凹陷方向（刀具***方向 前方側）漸漸變小地傾斜。 將刀具本體3 - 5 0朝向刀具***方向A的前方側 軸線〇方向***轉接器3 - 1 0的內周部的話，刀具本 50的凸緣部3-52是藉由被承接於轉接器3-10的段 3 - 1 2，如第1 2圖及第1 3圖所示，使凸緣部3 - 5 2的 3 - 5 3及段差部3 -1 2的壁面3 - 1 3相面對配置，且，形 凸緣部3-52的複數凸部3-54是各別嵌合在形成於段 3-12的複數凹部3-14。 形成於凸緣部3-52的複數凸部3-54是藉由各別 於段差部3-12的複數凹部3-14，分別使各凸部3-54 對的側面3 - 5 5、3 - 5 5及各凹部3 -1 4的一對的側面3 _ 3 -1 5相互面接觸。 如此，藉由分別使各凸部3 - 5 4的一對的側面3 -3-55及各凹部3-14的一對的側面3-15、3-15面接觸 刀具本體3 - 5 0對於轉接器3 _ i 〇在軸線〇方向被定位 時’使刀具本體3 · 5 0對於轉接器3 · 1 0在周方向被固 且，使刀具本體3 - 5 0的軸線0與轉接器3 -1 〇的軸線 致。 如上述，刀具本體3-50***轉接器3-10的內周 使刀具本體3 - 5 〇對於轉接器3 - 1 0在軸線0方向被定 同時，使刀具本體3-50對於轉接器3-10在周方向 定，且，在刀具本體3-50的軸線〇與轉接器3-1〇的 其間 A的 沿著 體3-差部 壁面 成於 差部 嵌合 的一 15、 .5 5、 ，使 的同 定， 略一 部， 位的 被固 軸線 -35· 200529957 (30) 略一致的狀態下，藉由以複數（例如4個以上）的壓板 30，按壓朝向刀具本體3-50的刀具***方向A的後方 的一方的端面3-57，就可使刀具本體3-50強力地安裝 轉接器3 -1 0的內周部。 然而，本發明的實施例3，在刀具本體3-50被安 於轉接器3 -1 0的內周部的狀態下，如第1 3圖所示，在 成於凸緣部3-52的凸部3-54的頂面3-56及形成於段 部3 - 1 2的凹部3 -1 4的底面3 -1 6之間形成預定的間隙 且，在凸緣部3-52的壁面3-53及段差部3-12的壁面 13之間也形成預定的間隙。 但是，形成於凸緣部3-52的凸部3-54的頂面3-及形成於段差部3 - 1 2的凹部3 -1 4的底面3 -1 6相互密 也可以，凸緣部3-52的壁面3-53及段差部3-12的壁 3 -1 3相互密合也可以。 壓板3-30，是形成外周部的一部分具有呈直線狀 切除的切口部3 - 3 1的略圓板狀，在刀具本體3 - 5 0*** 接器3-1〇的內周部的狀態下，藉由螺絲3-33被螺固在 成於轉接器3 · 1 0的上述端面3 -1 7的略圓形的锪孔部3 · 內’且使刀具本體3-50的上述端面3-57也有一部分插 該總孔部3 - 3 2內。 壓板3-30，是藉由鬆緩螺絲3-33 ’在锪孔部3-32 就可以螺絲3 _ 3 3爲中心轉動自如，藉由轉動壓板3 - 3 0 切口部3 - 3 1位在刀具本體3 - 5 0的徑方向內周側，就可 刀具本體3-50***轉接器3-10的內周部，或將刀具本 側 於 裝 形 差 5 3_ 56 合 面 被 轉 形 32 入 內 使 將 體 -36- 200529957 (31) 3-50從轉接器3-10的內周部取下。相反地，藉由轉動壓 板3-30使切口部3-31不位在刀具本體3-50的徑方向內 周側後，旋緊螺絲3 - 3 3，就可將已***轉接器3 - 1 0的內 周部的刀具本體3-50，強力地安裝於此轉接器3-10的內 周部。 這種結構的曲柄銷銑床用刀具，是在使橫跨挾盤的曲 柄軸貫通刀具本體3-50的內空部的狀態下，藉由一邊沿 著曲柄軸的軸線（刀具本體3-50的軸線0)方向移動，一邊 朝刀具本體3-50的軸線0周圍自轉的同時，朝曲柄軸的 軸線周圍公轉，就可將此曲柄軸加工成預定形狀。 依據以上說明的本發明的實施例3的曲柄銷銑床用刀 具，在刀具本體3-50被安裝於轉接器3-10的狀態下，形 成於凸緣部3-52的凸部3-54是嵌合在形成於段差部3-12 的凹部3-14，使刀具本體3-50對於轉接器3-10在軸線Ο 方向被定位，使刀具本體3-50對於轉接器3-10在周方向 被固定，且，使刀具本體3-50的軸線Ο與轉接器3-10的 軸線略一致。 在此，因爲凸部3-54是形成：從略環狀的凸緣部3-52的上述壁面3-53朝軸線Ο方向突出，凹部3-52是形 成：從略環狀的段差部3-12的上述壁面3-13朝刀具本體 的軸線0方向凹陷，所以位置於凸部3 - 5 4彼此之間的間 隙或凹部3 -1 4，就無法朝刀具本體3 - 5 0的兩端面側或轉 接器3 · 1 0的雨端面側開放，就可各別高度保持刀具本體 3-50及轉接器3-10的剛性。 -37- 200529957 (32) 即，藉由在刀具本體3-50的最外周部殘存略環狀的 肋狀部分（略環狀的凸緣部3 - 5 2 )的同時，在轉接器3 -1 0 的最內周部殘存略環狀的肋狀部分（略環狀的段差部3-12 以外的部分），就可以各別高度保持刀具本體3 - 5 0及轉接 器3 · 1 0的剛性。 因此，因爲可以高度保持將刀具本體3-50安裝於轉 接器3 - 1 0時的安裝剛性，所以不會產生對於轉接器3 -1 〇 的刀具本體3-50的偏離，可良好持續維持設在此刀具本 體3-50的內周部的複數切刃的擺動精度，進一步，可以 提高曲柄軸的加工精度。 且，因爲凸部3-54是形成：使其一對的側面3-55、 3-55間的距離隨著朝向凸部3-54的突出方向漸漸變小， 且，凹部3 - 1 4是形成：使其一對的側面3 -1 5、3 -1 5間的 距離隨著朝向凹部3 -1 4的凹陷方向漸漸變小，所以容易 將刀具本體3-50對於轉接器3-10的內周部***的同時， 可確實使刀具本體3-50的軸線Ο與轉接器3-10的軸線略 一致。 然而，凸部3 - 5 4的一對的側面3 -5 5、3 - 5 5之中，將 至少一方的側面3-55’沿著刀具***方向A(刀具本體3-5〇的軸線Ο方向，刀具本體3-50的厚度方向）延伸也可 以，凹部3 - 1 4的一對的側面3 ·1 5、3 -1 5之中’將至少一 方的側面3-15，沿著刀具***方向A(刀具本體3-50的軸 線0方向，刀具本體3-50的厚度方向）延伸也可以。 在上述本發明的實施例3中，在形成於刀具本體3- -38- 200529957 (33) 50的凸緣部3-52的上述壁面3-53，形成複數朝向刀具插 入方向A的前方側突出的凸部3 - 5 4，在形成於轉接器3 _ 10的段差部3-12的上述壁面3-13，形成複數朝向刀具插 入方向 A的前方側凹陷的凹部3 -1 4，但是不限定於此， 在凸緣部3-52的上述壁面3-53，形成複數朝向刀具*** 方向A的後方側凹陷.的凹部，在段差部3 -1 2的上述壁面 3-13，形成複數朝向刀具***方向A的後方側突出的凸部 也可以。 且，在上述本發明的實施例3中，雖說明本發明適用 於刀具本體是安裝於轉接器的內周部的所謂內裝型的曲柄 銷銑床用刀具，但是不限定於此，本發明也可以適用在刀 具本體是安裝於轉接器的外周部的所謂外裝型的曲柄銷銑 床用刀具。 【圖式簡單說明】 [第1圖]本發明的實施例1的曲柄銷銑床用刀具的刀 具本體的端面的要部擴大說明圖。 [第2圖]本發明的實施例丨的曲柄銷銑床用刀具的刀 具本體的內周面的要部擴大說明圖。 [第3圖](a)是安裝於本發明的實施例1的曲柄銷銑床 用刀具的刀片的刀片本體的俯視圖，（b)是同刀片的A方 向側面圖’（c)是同刀片的B方向箭頭視圖的C方向箭頭 視圖。 [第4圖]由本發明的實施例2的曲柄銷銑床用刀具的 -39- 200529957 (34) 平面圖。 [第5圖]如第4圖所示的曲柄銷銑床用刀具的卸 \邬_ 大圖。 [第6圖]第5圖的X-X線剖面圖。 [第7圖]第5圖的Y-Y線剖面圖。 [第8圖]第5圖的Z-Z線剖面圖。 [第9圖]顯示突起部及切口部的第1變形例的剖@ 圖。 [第10圖]顯示突起部及切口部的第2變形例的剖面 圖。 [第1 1圖]本發明的實施例3的曲柄銷銑床用刀具的 平面圖。 [第12圖]如第1 1圖所示的曲柄銷銑床用刀具的要部 擴大圖。 [第13圖]第12圖的X-X線剖面圖。 [第14圖]將第12圖所示的曲柄銷銑床用刀具的刀具 本體從其背側的端面所見時的圖。 [第15圖]第14圖的Y方向箭頭視圖。 [第16圖]將第12圖所示的曲柄銷銑床用刀具的轉接 器從其表側的端面所見時的圖。 [第17圖]第16圖的Z方向箭頭視圖。 【主要元件符號說明】 2 -1 0轉接器 -40· 200529957 (35)In addition, the tool rotation direction T • 21-200529957 (16) connecting the curved blade 25A which is a wavy blade is inclined toward the rear side of the tool rotation direction τ toward the inner side of the axis 0 direction. At the same time, a clearance is formed in this curved surface portion 21B, which is a clearance surface serving as a curved edge 25A, which is a wavy blade, as it is inclined toward the rear side in the radial direction toward the rear side of the tool rotation direction T. Therefore, the axial rake angle A (axial rake angle) of the curved edge 25A, which is a wave-shaped blade, is set such that the curved edge 25A is inclined toward the front side of the tool rotation direction T toward the inner side of the axis 0 direction. Negative (for example -60 °). In addition, the radial rake angle R (radial rake angle) of the curved edge 25A, which is a wavy blade, is set to be negative as the curved edge 25A is inclined toward the outer side of the radial direction toward the front side of the tool rotation direction T ( For example -170.). The tool for a crank pin milling machine having such a structure is mounted on the tool mounting portion of a processing machine so that the axis 0 of the tool body 10 coincides with the main shaft and penetrates the hollow portion of the tool body 10 across the crank shaft of the disc. In this state, the crank can be moved by moving along the axis of the crank shaft (the axis of the tool body 10) while rotating around the axis 0 of the tool body 10 and revolving around the axis of the crank shaft. The shaft is processed into a predetermined shape. As described above, in the tool for a crank pin milling machine according to the first embodiment of the present invention, “the blades attached to the first blade mount 13 ... and the second blade mount 14 ... of the tool body 10 should be formed because The same type, so one curved blade 25 A ... can be formed with a single blade at a total of eight places, and can be used as a pin blade or a corrugated blade to cut each. This can reduce labor costs. In addition, 'the blade body 20 of such a blade is formed into a substantially trapezoidal flat plate shape having a pair of long side faces 2 2, 2 2 and a pair of short side faces 2 3, 2 3' as described above, and is therefore mounted on the first In the blade of the blade mounting base 13, the axial rake angle A of the curved edge 25A as the pin edge can be set to be positive. In addition, the short side surfaces 23 and 23 of the blade body 20 are each a slightly flat surface, and the radial rake angle R is a curved edge 25 A as a wave-shaped blade for a blade mounted on the second blade mounting base 14. Although it is set to negative, it does not increase significantly toward the negative angle side that is set to negative. ® Therefore, according to Example 1 of the present invention, setting the axial rake angle A of the curved edge 25A on the pin edge to be positive can effectively reduce the cutting resistance, and therefore, the machining of the crank shaft can be continued with high accuracy and stability. Further, in Embodiment 1 of the present invention, the short sides 23 and 23 of the blade body 20 are each constituted by a slightly flat surface. Even if the length of the blade body 20 is not long, the cutting edge length can be sufficiently ensured. The space occupied by the blade mount 13 formed in the tool body 10 is reduced, and the strength of the tool body 10 can be maintained at a high level. In addition, since the blade body 20 is formed in a simple trapezoidal flat plate shape, it is easy to manufacture and can reduce the processing cost. However, in the first embodiment of the present invention described above, an application example of the present invention is described using a built-in type crank pin milling machine tool. However, the present invention is not limited to this. In the tool body, the outer peripheral surface facing the outer peripheral side in the radial direction, A plurality of first blade mounts are formed, and on each outer peripheral surface side of both end surfaces facing the axial direction, -23- 200529957 (18) A plurality of second blade mounts are formed, and the two blade mounts of these first blade mounts are respectively mounted with blades. The so-called exterior-type crank pin cutter is also applicable to the present invention. [Embodiment 2] Hereinafter, Embodiment 2 of the present invention will be described with reference to the attached drawings. The tool for a crank pin milling machine according to the second embodiment of the present invention includes, as shown in Figs. 4 and 5, a ring-shaped rotor 2-10 mounted on a processing machine; At the same time, the inner peripheral portion of the adapter 2_10 is mounted on the inner peripheral portion of the adapter 2-10, and the tool body 2-50 is a substantially circular ring centered around the axis 0 and the axis 0. However, a plurality of pin blades for machining the outer peripheral surface of a pin portion (shaft portion) of a crank shaft or a side surface of a weight portion for adding a crank shaft are mounted on the inner peripheral portion of the tool body 2-50. The disposable blade of the cutting edge of the corrugated blade 'is omitted in the drawing. As shown in Figs. 6 and 7, in the outer periphery 2-51 of the tool body 2-50, the rear side of the tool insertion direction A (insert the tool body 2-50 into the inner peripheral portion of the adapter 2-10 The rear side of the direction of time, the upper part of the area in Fig. 6 and the upper part of the area, protrudes toward the outer peripheral side of the cutter body 2-50 diameter direction (the right side of Figs. 6 and 7). Therefore, the tool body 2-50 is formed with a slightly annular flange portion 2_52 protruding from the outer circumferential side in the radial direction of the outer peripheral surface 2-51 thereof, and formed at this edge portion 2-52: toward the tool insertion direction A Front side of the slightly ringed restraint surface 2-5 3. The figure on the second bed is the full convex shape of the cutting tool inserting 7 into the -24. 200529957 (19) Further 'as shown in Fig. 7, in the outer peripheral surface 2-5 1 of the tool body 2-50, the tool insertion direction A plurality of areas on the rear side of a protrude toward the outer circumferential side of the cutter body 2-50 in the radial direction than the flange portion 2-52. As a result, in the tool body 2-50, a plurality of protrusions 2-54 (for example, four or more) that protrude partially from the outer peripheral surface of the tool body 2-50 are formed in the tool body 2-50. The circumferential direction is formed at approximately equal intervals, and as shown in FIG. 8, a plurality of wall surfaces 2 _ are formed toward the front side and the rear side (peripheral direction) of the tool rotation direction T as shown in FIG. 8. 5 5, 2-55. Here, as shown in FIG. 8, among the pair of wall surfaces 2-5 5 and 2-55 of one protruding portion 2-54, the position is behind the tool rotation direction T and the side is toward the rear of the tool rotation direction T. The side wall surfaces 2-5 5 extend along the tool inserting direction A (the axis 〇 direction of the tool body 2-50, the thickness direction of the tool body 2-50), and are positioned in front of the tool rotation direction T toward the tool rotation direction. The wall surface 2-55 on the front side of T is inclined toward the rear side of the tool rotation direction T as the front side (the lower side in FIG. 8) faces the tool insertion direction A. On the other hand, as shown in FIGS. 6 and 7, on the inner peripheral surface 2 _ 1 1 of the adapter 2-10, the entire peripheral portion of the area on the rear side of the tool insertion direction A is toward the tool body 2- The outer circumferential side of 50 is recessed. Therefore, in the adapters 2-10, the outer peripheral side of the radial direction of the inner circumferential surface 2 · 1 1 is recessed while facing the one on the rear side of the tool insertion direction A of the adapter 2-10. The end face 2-1 6 is opened to form a slightly annular step portion 2-12 for receiving the aforementioned -25- 200529957 (20) The flange portion 2-52, where the step portion 2-12 is formed: toward the tool insertion direction A The rear side has a slightly annular restraint surface 2-13 ° Further, as shown in FIG. 7, on the inner peripheral surface 2-11 of the adapter 2-10, the plurality of areas in the rear side of the tool insertion direction A Is recessed toward the outer peripheral side of the cutter body 2-50 in the radial direction than the step portion 2-12. As a result, the adapter 2-10 is formed into a substantially rectangular parallelepiped shape partially recessed from the inner peripheral surface thereof, and a plurality (for example, 4 or more) for fitting the above-mentioned plural protrusions 2-54 ... The cutouts 2-14 ... are formed at regular intervals in the circumferential direction of the adapter 2-10. In the plural cutouts 2-14 ..., as shown in Fig. 8, they are respectively formed to face the cutter. A pair of wall surfaces 2-15, 2-15 on the front side and the rear side (peripheral direction) of the rotation direction T. Here, as shown in FIG. 8, among the pair of wall surfaces 2 -1 5 and 2-1 5 of one cutout portion 2-14, the rear side of the tool rotation direction T faces the front of the tool rotation direction T. The side wall surface 2 -1 5 extends along the tool insertion direction A (thickness direction of the tool body 2-50, and the axis O direction of the tool body 2-50), and is located in front of the tool rotation direction T toward the tool rotation direction. The wall surfaces 2-15 on the rear side of T are inclined toward the rear side of the tool rotation direction T as the front side (the lower side in FIG. 8) faces the tool insertion direction A. Inserting the tool body 2-50 toward the front side of the tool insertion direction A and inserting the inner peripheral portion of the adapter 2-10 along the axis 0 direction, the flange portion 2-52 of the tool body 2-50 will be received by the adapter Step 2-2 of the device 2-10, and the plural protrusions 2-54 of the tool body 2-50 will be fitted separately -26- 200529957 (21) Multiple cuts of the adapter 2-10 Department 2-14 ... The flange portion 2-52 of the tool body 2-50 is a stepped portion 2-12 of the adapter 2_10, so that the restraint surface 2-53 of the flanged portion 2-52 and the stepped portion 2 -1 2 The restraint surfaces 2-1 3 extend along the radial direction of the tool body 2-50 to form a slightly ring-shaped contact surface, which are in surface contact and overlap each other in the radial direction of the tool body 2-50. In this way, the restraint surface 2-53 of the flange portion 2-52 and the restraint surface 2-13 of the step portion 2-12 are etched by the surface, so that the tool body 2-50 is aligned with the adapter 2-10 in the direction of the axis 0 Positioning. Here, in the second embodiment of the present invention, as shown in FIG. 6 and FIG. 7, 'the restraint surface 2-53 of the flange portion 2-52 and the restraint surface 2-13 of the step portion 2-12 are possible. The slightly annular contact surface that makes contact is such that the length d along the radial direction of the tool body 2-50, that is, the width of the contact surface, is the thickness D for the tool body 2-50 (along the axis of the tool body 2-50 〇direction length) 'is set in the range of 0.1D to 1.0D. The plurality of protrusion portions 2-54 of the tool body 2-50 are each provided with a plurality of cutout portions 2-14 which are fitted to the adapter 2-10, respectively, and each of the protrusion portions 2-5 4 ... A pair of wall surfaces 2-5 5 and 2-5 5 and a pair of wall surfaces 2-1 5 and 2-1 5 of each cutout 2-M ... are in surface contact with each other. In this way, "the pair of wall surfaces 2-55 and 2-55 of each protrusion portion 2-54 and the pair of wall surfaces 2-15 and 2-15 of each notch portion 2-14 are brought into surface contact with each other," so that the tool body 2 -50 For the adapter 2-10 to be fixed in the circumferential direction, 'align the axis 0 of the tool body 2-50 with the axis of the adapter 2-10 slightly. -27- 200529957 (22) As mentioned above, the tool body 2-50 is inserted into the inner peripheral part of the adapter 2-10 so that the tool body 2-5 0 is positioned for the adapter 2-1 0 in the axis 0 direction, and the tool The body 2-50 is fixed in the circumferential direction with respect to the adapter 2-10, and in a state where the axis 0 of the tool body 2-50 and the axis of the adapter 2-10 are slightly consistent, a plurality (for example, 4 Above) pressure plate 2-30 ... By pressing one of the end faces 2-56 facing the rear of the tool insertion direction A of the tool body 2-50, the tool body 2-50 is strongly mounted on the rotor 2-10 Inner periphery. The pressure plate 2-30 is formed into a substantially circular plate shape having a cutout portion 2-31 having a linear cut-out in a part of the outer peripheral portion. With the cutter body 2-50 inserted into the inner peripheral portion of the adapter 2-10, The screw 2-33 is screwed into the slightly round countersunk hole portion 2_ formed in the above-mentioned end surface 2-16 of the adapter 2-10, and a part of the above-mentioned end surface 2-56 of the cutter body 2-50 is also inserted into the Inside the countersunk part 2-32. The pressure plate 2-3 0 is a plurality of protrusions 2-54 arranged in a state adjacent to the circumferential direction in a state where the cutter body 2-50 is inserted into the peripheral portion of the adapter 2-10 (in the circumferential direction) The adjacent plurality of cutout portions 2-14 ...) are slightly spaced from each other in the circumferential direction. The pressure plate 2-30 can be loosened by loosening the screw 2-33, and can be rotated around the screw 2-33 at the counterbore portion 2-32. By turning the pressure plate 2-30, the cutout portion 2-3 is located on the tool body Insert the cutter body 2-50 into the inner periphery of the adapter 2-10, or remove the cutter book 2-50 from the inner periphery of the adapter 2-10. . Conversely, by turning the plate 2-30 so that the cutout portion 2-31 is not positioned on the solid line side of the cutter body 2-50 in the radial direction, the shape is deformed 3 2 into the inside to press the body inward -28- 200529957 ( 23) After the peripheral side, tighten the screws 2-3 3, and the cutter body 2-50, which has been inserted into the inner peripheral part of the adapter 2 _ 丨 〇, can be strongly installed on the adapter 2-1 〇 Inner periphery. In addition, by pressing the pressing plate 2_3〇 .. ·, one end surface 2-56 (correctly the bottom surface of the main hole portion 2-32) of the tool body 2-50 is pressed, and the tool body 2-50 is strongly mounted on the adapter 2 In the state of the inner peripheral portion of -10, the inner peripheral portion located in the radial direction of the most cutter body 2-50 of each pressure plate 2-30 is arranged to be a protrusion protruding from the outer peripheral surface 2_51 of the cutter body 2-50 The edge portion 2_52 is closer to the radial inner peripheral side of the tool body 2-50. This type of crank pin tool for bed is a state in which the crank shaft across the disc penetrates the hollow portion of the tool body 2-50, and is along the axis of the crank shaft (tool body 2). -50 axis 〇) direction, while rotating around the axis 0 of the tool body 2-50, while revolving around the axis of the crank shaft, the crank shaft can be processed into a predetermined shape. According to the tool for a crank pin milling machine according to the second embodiment of the present invention described above, since the tool body 2-50 is mounted on the adapter 2-10, the flange portion 2 of the tool body 2-50 -52 and the step 2-12 of the adapter 2-10 are in contact with each other and overlap each other in the radial direction of the tool body 2-50 ', so that the tool body 2-50 is aligned with the adapter 2-10 in the axis 0 direction. Positioning ', so even if the tool body 2-50 is exchanged when the adapter 2-10 is thermally expanded due to cutting heat, this newly exchanged tool body 2-50 is hardly aligned with the adapter 2 -1 in the direction of the axis 〇 Deviation. In addition, the flange portion 2-52 of the tool body 2-50 and the step portion 2-12 of the adapter 2-10 are slightly annular contact surfaces that can be surface-contacted, because -29- 200529957 (24) The length d of the cutter body 2_50 in the radial direction is set to 1.0D or less, so even if a large load is applied in the thrust direction, the flange portion 2-52 or the step portion 12 is not easily bent, and it is possible to suppress the load due to the thrust direction. The phenomenon that the blade 2-50 is deviated from the adapter 2-1 0 in the direction of axis 0. Once the slightly circular contact surface is set, the length d in the direction of the tool body 2-50 is set to 0.1 D or more ', so that the tool 2-10 adapter 2-10 cannot be accurately positioned. However, it is more preferable that the length d in the 2-50 radial direction of the tool body in the above-mentioned slightly circular contact surface is set in the range of 0.2D to 0.4D. Therefore, in Embodiment 2 of the present invention, the tool body 2-50 does not deviate in the direction of the axis 0 for the transition 2 -1 even due to cutting heat or a load in the pushing direction, and the height can be maintained continuously. The swing accuracy of the plurality of cutting edges provided on the inner peripheral portion of the blade body 2-50 further improves the machining accuracy of the crank shaft. In addition, in the second embodiment of the present invention, the plurality of protrusions 2-5 formed in the tool book 2-50 are inserted into the plurality of cutout portions 2-1 formed in the adapter 2 respectively. 4…, the tool body 2-5 0 can be fixed in the circumferential direction with respect to the adapter 2-10, and the axis of the tool body 2-50 and the adapter 2-10 can be slightly aligned with each other. Structure, it can be easily fixed and aligned in the circumferential direction of this adapter 2-10. Here, "the shape of the cutout 2-14 for the projection 2-54 or the projection 2-54 fitting" is not limited to that shown in Fig. 8, and for example, Figs. 9 and 10 may be used. As shown in the first modification shown in FIG. 9], each of the protrusions 2_54 can be used as a force device with a diameter of 10, and can be used as a body. -30- 200529957 (25) A pair of wall surfaces 2-55, Among 2-55, the wall surfaces 2-5 5 located on the rear side of the tool rotation direction τ toward the rear side of the tool rotation direction T are inclined toward the front side of the tool rotation direction τ toward the front side of the tool insertion direction A. The wall surface 2_5 located at the front side of the tool rotation direction T toward the front side of the tool rotation direction T is inclined toward the rear side of the tool rotation direction T toward the front side of the tool insertion direction a. Corresponding to this, among the pair of wall surfaces 2-15, 2-15 of one cutout portion 2-14, the wall surface S-1 located on the rear side of the tool rotation direction T toward the front side of the tool rotation direction τ 'is As the front side toward the tool insertion direction a is inclined toward the front side of the tool rotation direction T, the wall surface 2-15 located on the front side of the tool rotation direction τ toward the rear side of the tool rotation direction T is directed toward the tool insertion direction A The front side is inclined toward the rear side in the tool rotation direction T. Moreover, as in the second modification shown in FIG. 10, both of the wall surfaces 2-55 and 2-55 of a pair of one protruding portion 2-54 extend along the tool insertion direction A, corresponding to this, Each of the two notch portions 2_; [4, both of the pair of wall surfaces 2_U, 2-15, also extends along the tool insertion direction A. However, in the second embodiment of the present invention, although the present invention is described as being applied to a so-called built-in type crank pin milling machine tool in which the tool body is mounted on the inner peripheral portion of the adapter, the present invention is not limited to this. It can also be applied to a so-called exterior-type crank pin sharp bed tool in which the force tool body is attached to the outer peripheral portion of the adapter. In this case, the tool body 2-50 is formed with a slightly annular flange portion protruding from the inner circumferential side of the inner circumferential surface in the radial direction, and from the same inner periphery -31-200529957 (26) facing The plurality of protrusions protruding on the inner circumferential side in the radial direction form a slightly annular stepped portion that receives the flange portion while recessing from the entire circumference of the outer peripheral surface toward the inner circumferential side in the radial direction on the adapter 2-10. A plurality of cutout portions are formed which are recessed from the same outer peripheral surface toward the inner peripheral side in the radial direction. [Embodiment 3] Hereinafter, Embodiment 3 of the present invention will be described with reference to the drawings. The tool for a crank pin milling machine according to the third embodiment of the present invention includes, as shown in Fig. I} and Fig. 12, an adapter 3-10 of a substantially circular shape mounted on a processing machine; and by inserting The inner peripheral part of this adapter 3-10 is simultaneously mounted on the inner peripheral part of the adapter 3-10, and the tool body 3-50 is a substantially circular ring centered around the axis 0 around the axis 0. However, on the inner peripheral portion of the cutter body 3-50, plural numbers are mounted: pin blades for machining the outer peripheral surface of the pin portion (shaft portion) of the crank shaft, or corrugated blades for machining the side surface of the weight portion of the crank shaft. Disposable blade with cutting edge, but omitted in the drawing. As shown in Figures 14 and 15, on the outer peripheral surface 3-51 of the tool body 3-50, the rear side of the tool insertion direction A (insert the tool body 3-50 into the inner peripheral part of the adapter 3-10 The rear side of the direction at the time, the lower side of Fig. 15), the entire circumference of the area protrudes toward the outer peripheral side of the cutter body 3-50 in the radial direction. Therefore, in the cutter body 3-50, a slightly annular flange portion 3-5 2 protruding from the entire circumference of the outer peripheral surface 3-51 in the radial direction is formed. This flange portion 3-5 2 has The wall surface 3-5 3 is slightly annular toward the front side of the tool insertion direction A (the upper side of Fig. 15-32- 200529957 (27)). Further, as shown in FIGS. 14 and 15, the wall surface 3-53 (the wall surface 3-53 facing the stepped portion 3-12 described later) on the flange portion 3-52 is formed in a plural number: toward the cutter The convex part 3-54 protruding in the axis 0 direction of the body 3-50, that is, the front side of the tool insertion direction A. As a result, in the flange portion .3-52, a plurality of convex portions 3-54 (e.g., four or more) having a substantially rectangular parallelepiped shape partially protruding from the wall surface 3-53 toward the front side of the tool insertion direction A are provided. Are arranged at equal intervals in the circumferential direction of the tool body 3-50, and the plurality of convex portions 3-54 are respectively shown in FIG. 15 and each have a front side and a rear side (circumferential direction) facing the tool rotation direction T. Opposite sides 3-5 5, 3-5 5. Here, as shown in FIG. 15, a pair of side surfaces of one convex portion 3-54. Among 3-5 5 and 3-5 5, the front side of the tool rotation direction T faces the tool rotation direction T. The front side surface 3-5 5 is a side surface 3 which is inclined toward the front side of the tool insertion direction A toward the rear side of the tool rotation direction T, and is located on the rear side of the tool rotation direction T toward the rear side of the tool rotation direction T. -5 5 is inclined toward the front side of the tool rotation direction T as it goes toward the front side of the tool insertion direction A. That is, the pair of side surfaces 3-55 and 3-55 of the convex portion 3-54 are gradually inclined so that the distance between them becomes gradually smaller toward the protruding direction of the convex portion 3-54 (the front side of the tool insertion direction A). . On the other hand, as shown in FIGS. 16 and 17, on the inner peripheral surface 3-11 of the adapter 3-10, the entire periphery of the area in the rear side of the tool insertion direction A (upper side in FIG. 17). , Is facing the radial direction of tool body 3-50 -33- 200529957 (28) The outer peripheral side is recessed. Therefore, in the adapter 3-10, the outer peripheral side of the radial direction in the radial direction of the inner peripheral surface 3-11 is recessed while facing the one on the rear side of the tool insertion direction A of the adapter 3-10. The end face 3-1 7 is opened to form a slightly annular step portion 3-12 for receiving the above-mentioned flange portion 3-52. This step portion 3-12 has a rear side facing the tool insertion direction A (the 17th The figure is on the upper side) of the wall surface 3-13. Further, as shown in FIG. 16 and FIG. 17, the wall surface 3-13 (the wall surface 3-13 facing the flange portion 3-52) at the step portion 3-12 is formed in a plural number: toward the cutter The axis O direction of the body 3-50, that is, the recessed portion 3-14 recessed in the front side of the tool insertion direction A. As a result, the stepped portion 3 -1 2 is formed into a slightly cuboid shape partially recessed from the wall surface 3 -1 3 toward the front side of the tool insertion direction A, and a plural number for fitting the above-mentioned plural convex portions 3-54. (For example, 4 or more) concave portions 3-1 to 14 are arranged at equal intervals in the circumferential direction of the adapter 3 · 10, and plural concave portions 3 to 1 4 are shown in Fig. 17 and each have a facing tool. A pair of side surfaces 3-15, 3-15 on the front side and the rear side (circumferential direction) in the rotation direction T. Here, as shown in FIG. 15, among the pair of side surfaces 3-15 and 3-15 of one recess 3-14, the front side of the tool rotation direction T faces the rear side of the tool rotation direction T. The side surface 3 -1 5 is a wall surface 3 -1 that is inclined toward the front side of the tool insertion direction A toward the rear side of the tool rotation direction T, but is located on the rear side of the tool rotation direction T toward the front side of the tool rotation direction T. 5 is inclined toward the front side of the tool rotation direction T as it goes toward the front side of the tool insertion direction A. -34- 200529957 (29) That is, the pair of side surfaces 3-1 5 and 3-1 5 of the recessed portion 3-1 4 are directed toward the recessed direction of the recessed portion 3-14 (front side of the tool insertion direction). Tilt gradually. Inserting the tool body 3-50 into the inner peripheral portion of the adapter 3-10 toward the front axis 〇 of the tool insertion direction A, the flange portion 3-52 of the tool book 50 is received by the adapter. 3-1 2 of the device 3-10, as shown in Fig. 12 and Fig. 13, the wall surface 3-1 3 of the flange portion 3-5 2 3-5 3 and the step portion 3-1 2 They are arranged to face each other, and the plurality of convex portions 3-54 of the flange portion 3-52 are respectively fitted in the plurality of concave portions 3-14 formed in the segments 3-12. The plurality of convex portions 3-54 formed in the flange portion 3-52 are the side surfaces 3-5 of each pair of convex portions 3-54 with the plurality of concave portions 3-14 different from the step portions 3-12, respectively. -5 5 and a pair of side surfaces 3 _ 3 -1 5 of each recess 3-1 4 are in surface contact with each other. In this way, the pair of side surfaces 3-3-55 of each convex portion 3-5 4 and the pair of side surfaces 3-15 and 3-15 of each concave portion 3-14 are brought into contact with the tool body 3-5 respectively. When the adapter 3 _ i 〇 is positioned in the direction of the axis 〇 ', the tool body 3 · 50 is fixed to the adapter 3 · 10 in the circumferential direction, and the tool body 3-50's axis 0 and the adapter are changed.器 3 -1 〇 The axis is the same. As described above, inserting the tool body 3-50 into the inner periphery of the adapter 3-10 causes the tool body 3-5 to be aligned with the adapter 3-10 in the direction of axis 0, and the tool body 3-50 to the adapter The tool 3-10 is fixed in the circumferential direction, and the axis A of the tool body 3-50 and the adapter 3-1 between the A along the wall of the body 3-differential portion are formed into a 15-fitting portion, .5 5. Make the same setting, slightly a fixed position, the fixed axis -35 · 200529957 (30) is slightly consistent, by pressing the pressing plate 30 with a plurality (for example, 4 or more) toward the tool body 3 The -50 tool is inserted in the direction A in the rear end surface 3-57, so that the tool body 3-50 can strongly mount the inner peripheral portion of the adapter 3-10. However, in the third embodiment of the present invention, in a state where the cutter body 3-50 is mounted on the inner peripheral portion of the adapter 3-10, as shown in FIG. 13, it is formed on the flange portion 3-52. A predetermined gap is formed between the top surface 3-56 of the convex portion 3-54 and the bottom surface 3-1 6 of the concave portion 3-1 4 formed in the segment portion 3-1 2, and the wall surface of the flange portion 3-52 A predetermined gap is also formed between the 3-53 and the wall surface 13 of the step portion 3-12. However, the top surface 3 of the convex portion 3-54 formed on the flange portion 3-52 and the bottom surface 3 -1 6 of the recessed portion 3 -1 4 formed on the step portion 3-1 2 may be dense, and the flange portion may be close to each other. The wall surface 3-53 of 3-52 and the wall 3 -1 3 of the step portion 3-12 may be in close contact with each other. The pressure plate 3-30 is formed into a substantially circular plate shape having a cutout portion 3-3 1 cut out linearly in a part of the outer peripheral portion, and in a state where the cutter body 3-50 is inserted into the inner peripheral portion of the connector 3-10. The screws 3 to 33 are screwed to the above-mentioned end face 3 -1 7 of the adapter 3 · 10, which is a rounded countersunk hole portion 3 · 7 'and the end face 3 of the tool body 3-50 -57 is also partially inserted into the main hole portion 3-3 2. The pressure plate 3-30 can be rotated around the screw 3 _ 3 3 by loosening the screw 3-33 ′ at the countersunk hole portion 3-32. By turning the pressure plate 3-3 0, the cutout portion 3-3 is positioned at 1 The tool body 3-50 can be inserted into the inner peripheral part of the adapter 3-10 in the radial direction of the inner peripheral side of the tool body 3-50, or the tool side can be deformed by 32 3-56. Remove the body-36- 200529957 (31) 3-50 from the inner periphery of the adapter 3-10. Conversely, after turning the pressure plate 3-30 so that the cutout portion 3-31 is not positioned on the inner circumferential side of the cutter body 3-50 in the radial direction, tighten the screws 3-3 3 to insert the adapter 3- The cutter body 3-50 on the inner periphery of 10 is strongly mounted on the inner periphery of this adapter 3-10. The tool for a crank pin milling machine having this structure is in a state where the crank shaft spanning the swash plate penetrates the hollow portion of the tool body 3-50, and is along the axis of the crank shaft (tool body 3-50 Axis 0), while rotating around the axis 0 of the tool body 3-50, while revolving around the axis of the crank shaft, the crank shaft can be processed into a predetermined shape. According to the tool for a crank pin milling machine according to the third embodiment of the present invention described above, in a state where the tool body 3-50 is mounted on the adapter 3-10, the convex portion 3-54 is formed on the flange portion 3-52. It is fitted in the recess 3-14 formed in the step portion 3-12, so that the tool body 3-50 is positioned in the direction of the axis 3-10 with respect to the adapter 3-10, and the tool body 3-50 is positioned with respect to the adapter 3-10 It is fixed in the circumferential direction, and the axis 0 of the tool body 3-50 is slightly aligned with the axis of the adapter 3-10. Here, the convex portion 3-54 is formed to protrude from the wall surface 3-53 of the slightly annular flange portion 3-52 in the direction of the axis O, and the concave portion 3-52 is formed to be formed from the slightly annular step portion 3 The wall surface 3-13 of -12 is recessed in the direction of the axis 0 of the tool body, so the gaps between the protrusions 3-5 4 or the recesses 3-1 4 cannot face the ends of the tool body 3-5 0 The side or the rain end face of the adapter 3 · 10 is opened to maintain the rigidity of the cutter body 3-50 and the adapter 3-10 at respective heights. -37- 200529957 (32) That is, while a slightly annular rib-like portion (a slightly annular flange portion 3-5 2) remains in the outermost peripheral portion of the cutter body 3-50, the adapter 3 A slightly ring-shaped rib-shaped portion (apart from the slightly ring-shaped step portion 3-12) remains at the innermost peripheral portion of -1 0, and the tool body 3-50 and the adapter 3 · 1 can be held at respective heights. 0 rigidity. Therefore, since the mounting rigidity when the tool body 3-50 is mounted on the adapter 3-10 can be maintained at a high level, no deviation from the tool body 3-50 of the adapter 3-10 is generated, and it is possible to continue well. The swing accuracy of the plurality of cutting edges provided in the inner peripheral portion of the cutter body 3-50 is maintained, and the machining accuracy of the crank shaft can be further improved. Moreover, since the convex portion 3-54 is formed, the distance between the pair of side surfaces 3-55 and 3-55 becomes smaller as the protruding direction of the convex portion 3-54 becomes smaller, and the concave portion 3-1 4 is Formation: The distance between a pair of side surfaces 3 -1 5 and 3 -1 5 gradually decreases as the recessed direction of the recessed portion 3 -1 4 is reduced, so it is easy to change the tool body 3-50 to the adapter 3-10 While inserting the inner peripheral portion of the blade, the axis 0 of the tool body 3-50 and the axis of the adapter 3-10 can be made slightly coincident. However, among the pair of side surfaces 3-5 5 and 3-5 5 of the projections 3-5 4, at least one side surface 3-55 ′ is along the tool insertion direction A (the axis 3-5 of the tool body 〇 Direction, the thickness direction of the tool body 3-50) can also be extended, among the pair of side surfaces 3 · 1 5 and 3-1 5 of the recess 3-1 4, insert at least one side 3-15 along the tool The direction A (the axis 0 direction of the tool body 3-50, the thickness direction of the tool body 3-50) may be extended. In the third embodiment of the present invention, a plurality of the wall surfaces 3-53 formed on the flange portion 3-52 of the cutter body 3--38- 200529957 (33) 50 are formed so as to protrude toward the front side of the tool insertion direction A. The convex portions 3-5 4 are formed on the wall surface 3-13 formed in the step portion 3-12 of the adapter 3 _ 10 with a plurality of concave portions 3 -1 4 which are recessed toward the front side of the tool insertion direction A, but not Limited to this, a plurality of recesses are formed in the wall surface 3-53 of the flange portion 3-52 toward the rear side of the tool inserting direction A, and a plurality of directions are formed in the wall surface 3-13 of the step portion 3 -1 2 A convex portion protruding on the rear side in the tool insertion direction A may be used. In the third embodiment of the present invention, the present invention is described as being applicable to a so-called built-in type crank pin milling machine tool in which the tool body is mounted on the inner peripheral portion of the adapter, but the present invention is not limited to this. It can also be applied to a so-called exterior-type crank pin milling machine tool in which the tool body is attached to the outer peripheral portion of the adapter. [Brief Description of Drawings] [Fig. 1] An enlarged explanatory view of a main part of an end face of a tool body of a tool for a crank pin milling machine according to a first embodiment of the present invention. [Fig. 2] An enlarged explanatory view of a main part of an inner peripheral surface of a tool body of a tool for a crank pin milling machine according to an embodiment of the present invention. [Figure 3] (a) is a plan view of a blade body of a blade mounted on a tool for a crank pin milling machine according to Embodiment 1 of the present invention, (b) is a side view of the same blade in the direction A, and (c) is the same blade C direction arrow view of B direction arrow view. [Fig. 4] -39- 200529957 (34) plan view of a tool for a crank pin milling machine according to Embodiment 2 of the present invention. [Fig. 5] Unloading of a tool for a crank pin milling machine as shown in Fig. 4 [Figure 6] Sectional view taken along the line X-X in Figure 5. [Figure 7] Sectional view taken along line Y-Y in Figure 5. [FIG. 8] A sectional view taken along line Z-Z in FIG. 5. [FIG. 9] A cross-sectional view illustrating a first modification of the protruding portion and the cutout portion. [Fig. 10] A cross-sectional view showing a second modification of the protruding portion and the cutout portion. [Fig. 11] A plan view of a cutter for a crank pin milling machine according to a third embodiment of the present invention. [Fig. 12] An enlarged view of a main part of a tool for a crank pin milling machine as shown in Fig. 11. [Figure 13] Sectional view taken along the line X-X in Figure 12. [Fig. 14] A view when the tool body of the tool for a crank pin milling machine shown in Fig. 12 is viewed from an end surface on the back side. [Fig. 15] An arrow view in the Y direction of Fig. 14. [Fig. 16] A view when the adapter of the tool for a crank pin milling machine shown in Fig. 12 is seen from the front end surface. [Fig. 17] An arrow view in the Z direction of Fig. 16. [Description of main component symbols] 2 -1 0 adapter -40 · 200529957 (35)
2-1 1 內周面 2 - 1 2段差部 2 -1 3 拘束面 2 - 1 4 切口部 2 - 1 5朝向壁面 2 - 1 6細面 2 - 3 0壓板 2-3 1切口部 2-3 2 锪孔部 2 - 3 3 螺絲 2-50刀具本體 2 - 5 1 外周面 2 - 5 2凸緣部 2 - 5 3 拘束面 2 - 5 4 突起部 2- 55 壁面2-1 1 Inner peripheral surface 2-1 2-step difference 2 -1 3 Restraint surface 2-1 4 Notch 2-1 5 To the wall 2-1 6 Fine surface 2-3 0 Platen 2-3 1 Notch 2-3 2 Countersunk part 2-3 3 Screw 2-50 Tool body 2-5 1 Outer peripheral surface 2-5 2 Flange part 2-5 3 Restrained surface 2-5 4 Projection part 2- 55 Wall surface
2 - 5 6端面 3 -1 0轉接器 3 - 1 1內周面 3- 12段差部 3-1 3 壁面 3 -1 4凹部 3 -1 5側面 3-16底面 -41 - 200529957 (36) 3 - 1 7 )¾ 面2-5 6 End face 3 -1 0 Adapter 3-1 1 Inner peripheral surface 3- 12 step difference 3-1 3 Wall surface 3 -1 4 Recess 3-1 5 Side surface 3-16 Bottom surface -41-200529957 (36) 3-1 7) ¾ side
3 - 3 0壓板 3 - 3 1切口部 3-3 2 锪孔部 3 - 3 3 螺絲 3-50刀具本體 3 - 5 1 外周面 3-52 凸緣部 3-52 凹部 3-53壁面 3 - 5 4凸部 3 - 5 5 側面 3 - 5 6頂面 3 - 5 7 牺面 1 〇刀具本體 1 1內周面 1 2 A端面 12B端面 13 刀片安裝座 14刀片安裝座 1 5夾具螺栓 20刀片本體 20A插通孔 21上下面 -42- 200529957 (37) 21A、21B 曲面部分 22長側面 2 3 短側面 24A銳角角落部 24B鈍角角落部 25 曲線刃 2 5 A 曲線刃 2 5 B 直線刃3-3 0 Pressure plate 3-3 1 Cutout 3-3 2 Countersunk part 3-3 3 Screw 3-50 Tool body 3-5 1 Outer peripheral surface 3-52 Flange part 3-52 Recessed part 3-53 Wall surface 3- 5 4 convex 3-5 5 side 3-5 6 top 3-5 7 sacrificial surface 1 〇 tool body 1 1 inner peripheral surface 1 2 end face 12B end face 13 blade mount 14 blade mount 1 5 clamp bolt 20 blade Main body 20A insertion hole 21 top and bottom -42- 200529957 (37) 21A, 21B Curved part 22 long side 2 3 short side 24A acute angle corner 24B obtuse angle corner 25 curved edge 2 5 A curved edge 2 5 B straight edge